I’ve seen a couple names but don’t know anything about any of them except for one guy, P4nyhof. Some of the account holders for that stream have been accused of view-botting to raise its Twitch status/viewer numbers/placement and amass more clicks/viewers, as well as a bunch of other weird shit. The Hearthstone community used to complain about its Twitch account constantly a few years ago when there was apparently some questionable stuff happening with the account. I’ve never watched the account’s stream though.
Blizzard also banned him from some tournament (because other members on his assigned team pulled out after learning they were being teamed up with him against their wishes) after a scandal at an earlier tournament where he was both admin and player and changed votes to his favor.