3:1 is a little high nowadays, but 2.5 maybe. It's just making a list of the 10 most known archers and hoping they have a high enough KD. It's a little unfair to do all of melee to just archers.
I wouldn't say they have a good KD now, but I believe for at least 1 gen they did pretty will with 2.5 or above.
NA:
Havoco
Aderyn
King_Itchy
Robin_Longstride
CYBD
Chestaclese
Include slightly old archers:
sWalker
SaifaQC
Kesh
Blackrose_Mrshine (sure you said somewhere you did quite well for a few gens)
KING_UGBERT
Xbows(main):
Silveredge
Marcus
Noodles
Weebo
Veto
HX:
ROHYPNOL
Bumblebee
some of the other in Rohypnol's clan (there's two others whose names I just can't recall)
I'm sure I'm missing a few names(fallen, SS,etc) since I don't pay attention to that many archers individually and more as a collective. Often times some good archers are just alts of some other known players, too. EU also has Bagge, Jambi, alts of top players like Chase, and many others whom the players on EU can more easily explain. They are known more for their archers from what I read, too. I think ranged benefit from staying together/positional advantage easier than melee nowadays, unless the team has many support melee players to go around. At the end of the round, I would rather have my team left with a group of archers than a group of just melee.