Antonio Inoki.
He practically founded modern day MMA and has had a hand in teaching some amazing MMA fighters, the most well known being Lyoto Machida.
And out of the wrestlers mentioned in this thread, I think Steve Blackman was the only true Martial Artist in the group. All of the others were somewhat trained, but nowhere near experts at their respected discipline.
And wrestling has never been a good showcase for martial arts. I mean, seriously dude. Think before creating threads.