Which types of bots are on lichess? (I'll update the list)
- Which use an engine? (1)
- Which use neural networks? (2)
- Which use (averages of) several engines? (3)
- Which use a human player? (4)
- Which use a team of human players? (5)
- Which use voting? (6)
- Which use tablebases? (7)
- Which use opening books? (8)
- Which use databases? (9)
- Which use lichess studies? (10)
- Which variants do they play? (11a = Standard, 11b = Crazyhouse, 11c = Chess960, 11d = King of the Hill, 11e = Three-check, 11f = Antichess, 11g = Atomic, 11h = Horde, 11i = Racing Kings, 11j = From Position)
- Which time controls do they play? (12a = Ultrabullet, 12b = Bullet, 12c = Blitz, 12d = Rapid, 12e = Classical, 12f = Correspondence, 12g = Unlimited)
- Which play rated and/or casual? (13a = Rated, 13b = Casual, 13c = Both)
- Which use a rating range? (14a = >1500, 14b = >2000, 14c = >2400, 14d = >2600, 14e = <1000, 14f = <1500, 14g = <2000, 14h = <2400)
- Which only play against titled players? (15)
- Which play with white and/or black? (16a = White, 16b = Black, 16c = Both)
- Which play simuls? (17)
- Which are streamers? (18)
- Which use Chess Insights? (19)
- Which accept challenges? (20)
- Which also play other games than chess elsewhere? (21)
- Which play against bots, computers and/or humans? (22a = bots, 22b = computers, 22c = humans)
- Which have a maximum amount of games they play at the same time? (23a = 1 game, 23b = 2 or 3 games, 23c = 4 to 10 games, 23d = more than 10 games)

Ordered by amount of numbers:
- centaur01 (1,2,3,4,7,8,11a/c,12f,13c,16c,20,22a/b/c,23c)=13
- PyChessBot (1,7,8,11a/b/c/d/e/f/g/h/i/j,12a/b/c/d/e,13c,16c,20,21,22c)=10
- LeelaChessOfficial (1,2,11a,12a/b/c/d,13a,15,16c,19,22c)=9
- VoteChess (6,11a,12d,13b,16c,19,20,22a/b/c)=8
- DangerousRide (1,11a/b/f/g,12a/b/c,13c,16c,20,22a/b/c)=7
- GarboBot (1,11a,12a/b/c/d/e/f/g,13c,16c,20,22a/b/c)=7
- ...
- ...

Please let me know what I can add to this list, especially if your account is a bot account.