Old RPlayer here, which is the most active rp mode right now?

Used to have a popular darkrp server. What is hot today?

DarkRP is definitely still the most played in Garry's Mod, although some of the servers in that category are different than others. Depending on how long ago you ran your server, things might be very different now. If you're looking to start up another community, I'd love to help. I'm learning lua in my spare time and am interested in Glua specifically.

DarkRP is still popular but dying off really quick, depending on your region there are multiple gmod servers that run DarkRP, one for example is iconicrp.net which I highly recommend:
Link to forums: iconicrp.net

Military RP is the most serious

most serious is gamemodes which based on dead clockwork. and helix i guess

DarkRP still alive, but when I played like 2-3 years ago.. There was a lot of bigger servers than now. Now I see almost every full Russian servers.