I've never named my voices, though I've had them for a long time, on and off. Some have certain defining characteristics, but not anything that I'd call a personality.
When I first started hearing them I interacted with them, sometimes 'conversing' with them for hours on end. Some were even interesting conversations. In time, though, I became aware that they rarely, if ever, told me anything I didn't already know, or might have once known and since forgotten, apart from the derogatory ones, and them I just try to tune out as much as possible. Eventually I just stopped talking back to them.
Nowadays, many times, I just hear susurrations. Kind of like wind in the trees or ocean waves. Sometimes they become distinguishable voices, often not. At least they are when I'm by myself, which seems to work best for me. I rarely interact with people for an extended period of time and, when I'm around several people at once or when I'm in a noisy environment, the voices get worse.