The best answer is probably Boris Lagutin. He was a Russian middle in the 1960's. He won two golds and one bronze as well as a host of Euro amateur crowns. he lost in the 1960 Olympics by a razore thin margin to Skeeter McLure who had an excellent pro career.

Another guy is a guy you've seen if you've watched Adamek fight. He does the Polish broadcasts. A guy named Jery Kulek or Kulej, something like that. A lightweight who also won a couple of golds in the 1960's.

There was another Pole who was good around that time Jerzy Rybiski? Something like that.

The other guy who comes to mind was a Rusiian heavy named Igor Vysotsky (something like that). he never made it to an Olympics because he kept getting hurt. His claim to fame? He KO'd Teofilo Stevenson twice. He also beat Tony Tubbs and Greg Page IIRC. Guy was serious business.

By the way, don't be so quick to claim the greatest Cubans are the heavies. Look up an absolute artist of a featherweight named Angel Hererra. Coupla golds, coupls world championships and a win over some guy named Pernell Whittaker!

I'm sure I'm leaving guys out, those are the names (close anyway) that I came up with.