Aluizio da Assuncao is definitely one of them. Signed him in my Alpha-1 and he looked good early on finishing his first three by knockouts. Got upset by a very unheralded Jan Olav Aker, losing by RNC but bounced back with more quality knockout victories.
I signed him in my Ring WARRIORS game and he is undefeated at 6-0 with all but one victory coming by way of KO/TKO. A big, powerful LHW with devastating striking and great wrestling, to boot. Most notable is the fact he took Toby Sorkin to a decision and dominated him with his stand up and wrestling and was able to TKO Jerry Bogdonovich.
Also, Wallace Everett. Easily the most dominant fighter of the lighter weight classes. He's won every fight he's had by KO or TKO. Great takedown defense and amazing stand up, he's like a featherweight Chuck Liddell. I picked him up after he suffered an upset loss against Anthony Ray Shenkman and ever since he's just been blazing through the FW division. Not only that, but he's got wins over Dominic Ash, Jefferson Mndawe (Amazing back and forth fight. Everett dropped Mndawe early in the first only to be dropped at the end of the round by a flying knee from Mndawe. Everett was able to recover and dominate the second round for a late TKO. I should mention that Mndawe is probably just as devastating a striker as Everett, finishing all of his bouts by KO as well), and a 27 second knockout of Daniel Ortiz (who was 8-0, all finishes) to win the Ring WARRIORS FW title.