For rare/occasional fighters, I'd add Brandon Dubinsky and Ryan Hollweg.
For others that fought more regularly, I would say a pre-tearaway Rob Ray. Ken McRae always seemed to be on the short end as well. Al Stewart always seem to be able to get in a few shots, but was typically overmatched.
Didn't Stewart do well against guys who should have destroyed him.. I remember him having a few good fights with Link Gaetz. he beat Craig Coxe and Jay Miller, and had a decent showing vs Dave Brown even tho he lost.
No doubt, some good fights and most certainly game. I believe after the Gaetz fight, Link called him a 'human punching bad'; however, I thought he did pretty well in that bout. During Crowder's brief run in 1990, always drove me nuts when Crowder appeared he was about ready to go and Stewart would come flying in. Just always thought he was well below .500.