I'm sure there are dedicated real-to-life ATC's out there but I don't know where since I've never flown online.
This discussions reminds me of the FS commercial with a guy in a pilot uniform asking for clearence at a FS airport and he gets it from a german mother that had to chase her kids out first and then she gave clearence to a virtual stuntpilot there as well and the commercial ends with the guy in the uniform being interrupted by another guy in a uniform saying: You know you're in a real aircraft right? And he replies: Yeah but this is cooler. I tried to find it online but I can't for some reason despite several attempts, maybe it was withdrawn?
Frank