I'm not on the esteemed judging panel [obviously you think you should be] and the fact you think it's an 'edited' list [it's the full list] and you have given White and Higgins question marks, just exposes your ignorance chrome.

Harry White won 4 Melb. cups in 6yrs.and among his many other achievements were 2 Cauifield cups, a Cox Plate, 3 Newmarket Handicaps and three Futurity Stakes wins among 200 feature race wins, 60 of them G1's. Harry was the best stayer and hands and heels rider that ever mounted a horse.

Roy Higgins achievements were as good as they ever get, including 10 jockey premierships [a record he shares only with Bill Duncan] and is one of only two jockeys ever to top a 'century' of group 1 winners, 108 of them. The other jockey being George Moore who won 119.
Higgins rode over 2,300 winners including two Melbourne Cups, a Caulfield Cup, a Cox Plate, 4 VRC Derbies, 5 VRC Oaks and 4 Blue Diamonds !

Only one other jockey [Greg Hall] managed to top the $30,000 fine for dangerous riding your mate Beadman coped and there not the sort of records that make Champion jockeys.