I assume that wasn't enough for you.
The other smurfs are most likely rando(s), As there's only two big/full smurf clans. Most of them are prone to being destroyed either by heatbomb + any boiler build and/or energy builds that has EMP. Other than that, we are going back to:
Certain hours when they're most empty.
HeathX and Golden Paladin are Romanian, so check the time you might see them. "riyady" is set on Pakistan, not sure if it's a VPN. There's a clan full of Chinese smurfs, so count that as well. The rest (excluding those who are still suck at R16 but has good-looking mechs) are manageable by going out of range. Have no clue where Vincenzo lives though.