Lets have a look at this idea shall we.
Only amateur fight
Khaled Laalaam - Had just come off finishing second in the IMMAF European Championships when he fought Khamzat, went on to win the IMMAF World Championships the same year he fought Khamzat. Now 1-0 as a pro having just turned pro a couple of months ago. Khamzat is the only guy to finish him to this point.
Pro fights
Garde Olve Sagen - Former IMMAF World Championship finalist as an Ammy but not a great pro record, however both pro losses are against guys who fought in the UFC in Khamzat and Rostem Akman.
Ole Magnor - This one is a bit of a can tbf, 6-6 as a pro but has generally been fed to ex-high level ammy prospects.
Marko Kisic - Was 5-0 when he fought Khamzat, but has fallen off a bit since and is now 6-3. Did beat a 9-2 guy the fight before he fought Khamzat
Sidney Wheeler - Former high school state champion wrestler who went to turn pro in MMA rather than pursue college (doesn't seem to have been the best decision) 8-3 when he fought Khamzat but only losses are to two UFC guys (GM3 and Brendan Allen) and top prospect Abdoul Abdloulragimov.
Ikram Aliskerov - Combat sambo world champion, 8-0 when he fought Khamzat and got KO'd and now 11-1. Mostly fought solid competition. One of the best MW's currently outside the UFC.
Mzwandile Hlongwa - 4-0 when he fought Khamzat and now 6-1 and has fought decentish competition lately.
John Phillips - 22-9 when he fought Khamzat. Always been a bit of a hard hitting journeyman. Not a particularly great win but Khamzat came in as a late replacement, so it's not like he was picked.
Rhys McKee - 9-2 when he fought Khamzat, then lost to Alex Morono (no shame in that) and looked good in last Cage Warriors fight. Not an amazing opponent, but the best they could find in a few days.
Gerald Meerschaert - 8-6 in the UFC and has beaten Muradov and Giles. Most losses are to ranked fighters. Extremely harsh to call him a can.
Li Jingliang - 10-4 in the UFC when he fought Khamzat. Recent wins over Santiago Ponzinibbio and Zalseski Dos Santos.