I think it’s clear Yermak and Sergey are two best players (I guess you could debate who is better between the two, IMO it’s Sergey)
However I’m unsure who I would rank as third best.
There are many ways to ‘measure’ how good a player is and I think all those should be looked at when deciding. Of course not every player tried hard at everything so their results might not be their true showing of the skill but this is just for fun anyway.
What I look at is the obvious streaking/winrate. Along with that things like realtime and turncount speedruns are good expressions of skill. There are also conduct runs, such as Sergey’s no items win or the MuMo challenge. How much each category is worth probably depends on the person doing the evaluation. Also due to difference in versions it might be hard to compare results.
Players in contention for 3rd best:
My picks:
Manman, Flugkiller, Charly, Narz/Nargun, Booing/Mumonspawn/Fagentul
Some other notable players you might want to consider: Elliptic, Sapher, Acrobat, Dilly, Cosmonaut, Dynast, Enegeticocto, Tlatalgkaus, MalcolmRose, Forgeling, Iamserjio, Shummie.
Feel free to point out any other players I missed!