Although Lemmy's userbase is quite large,it still is small enough that I do often see the same people in comment sections. It feels though, that I should recognise more names, because I can only remember around 5 individual ones.
Thepickardmaneuver or whatever and Luxefre or something are the only two I can think of. Another one posts a lot and the other made a good argument at some point.
There's a ton more that I recognize when I see their name but can't think of of the top of my head.
There are also few I've blocked that I don't give the pleasure of mentioning their names.