Japan Tadayuki Okada: Top Class = 4 Wins, 250 = 2 Wins.
Japan Nobuatsu Aoki: 250 = 1 Win.
Spain Àlex Crivillé: Top Class = 15 Wins, 125 = 5 Wins.
Japan Takuma Aoki: Nada!
Italy Luca Cadalora: Top Class = 8 Wins, 250 = 22 Wins, 125 = 4 Wins.
Japan Norifumi Abe: Nada!
Spain Carlos Checa: Top Class = 2 Wins.
Brazil Alex Barros: Top Class = 7 Wins.
Italy Doriano Romboni: 250 = 4 Wins, 125 = 2 Wins.
Also Top Class Riders from 1989 – 1999 with wins:
France Regis Laconi: Top Class = 1 Win.
USA Kenny Roberts Jr.: Top Class = 8 Wins.
Japan Norick Abe: Top Class = 3 Wins.
Italy Max Biaggi: Top Class = 13 Wins, 250 = 29 Wins.
New Zealand Simon Crafar: Top Class = 1 Win.
Italy Loris Capirossi: Top Class = 8 Wins, 250 = 13 Wins, 125 = 8 Wins.
Spain Alberto Puig: Top Class = 1 Win.
Australia Daryl Beattie: Top Class = 3 Wins.
USA Kevin Schwantz: Top Class = 25 Wins.
USA John Kocinski: Top Class = 13 Wins.
USA Wayne Rainey: Top Class = 24 Wins.
Australia Wayne Gardner: Top Class = 18 Wins.
USA Eddie Lawson: Top Class = 31 Wins.
Italy Pierfrancesco Chili: Top Class = 5 Wins.
You seem to have omitted some mayor Riders during Doohans days, Riders on the caliber of Rainey and Schwantz, that were riding when Doohan wan his first race and so on!
Nice omission, but did not work!