Thanks for all your answers so far guys I'm really enjoying this thread. Sorry for replying so late lol just thought I'd list some of mine now since I'm finally done work for the day
I have a lot so I thought it'd be best to only name some of the ongoing recurrent themes and the "biggest ones" (O = obsession, C = compulsions I perform for each obsession) - some of them are really weird imo and confusing/ridiculous (and they contradict like for example I have the one about faking all my mental illnesses yet I have another one about being "too mentally ill for" blank - like ???? lol)
O: Faking all my mental illnesses (including OCD) and trying to manipulate people somehow into believing me so I can hurt them or "use it against them" - I also have one about being a hypochondriac and another one about being a narcissist (idk they're annoying lol)
C: Researching (symptoms, diagnostic criteria, blogs, other things from people diagnosed with the disorders etc.) online, writing lists entailing all the symptoms I suffer from and comparing them to other people and the symptoms of the disorders and trying to re-convince myself I'm not faking (it probably doesn't help that I self-diagnosed some of them and haven't had the chance yet to have a psych re-evaluation due to long waiting lists), reassurance seeking from other people, "checking to see if the symptoms go away on their own" - but of course the obessions come right back anyways so doing that doesn't even really do much to help me feel better
O: Hurting other people, being violent or murdering people or animals, accidentally hurting people but having actual intentions to, manipulating people (also ties into another obsession of being a sociopath) and "just not realizing it yet" or "subconsciously pretending to not be a sociopath or abuser but consciously being in denial"
C: Research symptoms of being a sociopath and "how to see mental illness in yourself" and "how to stop being in denial" and "how to stop being delusional" (which in general is its own separate obsession because I'll get the intrusive obsessions about being "too mentally ill to realize things" - which also has caused other obsessions of its own
O: (^ like this one ->) Getting fired from work or dropping out of college or being deemed "too mentally ill/unfit/incapable to work" (I'm going to college to become a nurse starting in September)
C: Constantly organizing things at work and keeping the desk tidy "so that I won't get yelled at then get fired for being a slob and probably messing everything up and f*cking up important things due to having clutter everywhere", refusing to take lunch breaks or putting off doing anything I should do like going to the washroom etc. out of fear of going and ending up causing something bad to happen while I'm away from the desk (I work as a front desk agent at a hotel currently) or ending up neglecting issues or needing to be there all the time "just in case I need to be there to help if the desk get too busy or in case someone tries to steal/break things/rob us etc.", repeatedly asking if everything's okay or anyone I'm working with needs my help or if there's anything I can fix and constantly rechecking all the arrivals and departures and everything in our online system to make sure that I'm not forgetting or missing anything important (I'll constantly refresh everything or log in then back out "just in case the system or the computer f*cks up and I miss something then end up getting fired for seeming to inattentive or whatever for "not doing anything" etc.", pacing back and forth behind the desk to "make sure I'm alert in case someone comes in and tries to do something bad etc" (I'll fear that something bad will happen if I'm not there at all time "keeping guard" or something (idek it's weird I think lol), I also always look at how to apply for disability and stuff like that all the time online and ruminate about it constantly because of the fear of being deemed too mentally unstable to become a nurse or ending up being kicked out of college or whatever - so basically I do that "in case I don't have anything to fall back on if/when that happens".(I'd say probably my top compulsions are ruminating, researching, list making and reassurance seeking - all of which I have to do multiple multiple times and almost constantly to ever convince myself of any of my obsessions actually being obsessions and not being true things that I just "don't want to admit to")
O: Being watched/followed/stalked/listened to/recorded/watched by other people or by dead people (specifically being my family members or other people I know of or heard of dying) or "ghosts or spirits" (which is weird for me because I don't even really believe in those, although I always get intrusive thoughts about them - I even get intrusive thoughts about "the intrusive thoughts about them being the ghosts or spirits trying to talk to me by trying to convince me mentally about their existence/trying to tell me they're real because they want my attention" etc. Also the ones about being watched or recorded (specifically by cameras) is probably because my dad owns his own security surveillance system so I'll get intrusive thoughts about him "hiding them everywhere to spy on me because he doesn't trust me or to watch everything I'm doing" and him "knowing where they'd be best to hide so I wouldn't see them")
C: Naturally the paranoia of that makes me constantly check everything around me, including my closet and all over my room and in other rooms around the house and I'll even avoid places I know they're not because I can't see them but somehow my brain will try to convince me that they're invisible? (Idek it doesn't make any sense yet it still scares me so idk) and I'll not do certain things like I'll have to check everywhere around me after I'm getting out of the shower and need to put my towel on right away and need to cover everything as I'm getting dressed and need to turn all my cameras (on my phone and laptop) away from facing me and don't go near any reflective surfaces while I'm getting dressed or changing or getting in or out of the shower. I'll also get the obsession whenever I'm out walking anywhere that people are following me so I'll constantly re-check behind me "just in case there's somebody there now that's going to try to rape/kill/hurt/kidnap/steal from me
O: Being sexually attracted to family members and other people (I'm an aromantic asexual so I have a lot of sexual orientation obsessions and ones about being gay and ones about being straight and just generally "not really being aro ace and faking it or pretending to be aro ace or denying sexuality from myself" (which is bullsh*t and I know it but I still can't stop the obsessions from coming back)
C: "Test myself mentally" by purposely trying to picture people while masturbating so I'm "making sure that I have the right reaction of disgust to prove that I'm not attracted to those people" and, avoiding thinking of said family members ever other than that (or repeating words mentally like "no, stop, f*ck off, that's disgusting, leave me alone" etc. whenever the intrusive obsessions come back until I have no more of the thoughts coming back and repeating themselves) for fear of "thinking about them confirming it" (it being the sexual obsessions), checking online repeatedly back to previous sites and things I've used to re-convince myself of my sexual orientation (like blogs and "checklists for knowing you're aromantic and/or asexual")
O: "Being tested/checked on one day randomly" (this can be about numerous things; ex. having police raid my home, having government members "make sure I'm doing things right or not being a threat to society and being socially acceptable enough to keep living" (? like I said some of mine are bizarre and ridiculous lol)
C: Ruminating about what I'd do in that situation, thinking about what they'd "want me to do/think is right" etc (idek this is a weird one that I try to ignore and it isn't as strong of an obsession as my other ones)
O: Having people misinterpret things I say and it causing a disaster/accident/terrible thing etc., to happen
C: Re-explaining everything I try to tell to people, writing lists and tons of things about how to explain what I mean, making sure that I "remember to write down as many details so they won't get confused and then they won't get hurt because of me not doing it right"
Those are the main current ones I can think of off the top of my head (there's a lot more but I'm tired and a bit dissociative right now so I'm going to have to stop there and if there's more I can think of later then I'll add more on this thread)
Anyways if you read this whole thing congratulations and thank you lmao and again thank you for your responses this is really cool