Well these are all the males who have scored 30+ for the Rumba - which I reckon is a good benchmark to go by (main series only):
Colin Jackson (series 3, weeks 8 and 10, scored 36 both times)
Darren Gough (series 3, week 8, scored 30)
Gethin Jones (series 5, week 7, scored 31)
Matt di Angelo (series 5, week 9, scored 33)
Tom Chambers (series 6, week 12, scored 34)
Chris Hollins (series 7, weeks 1 and 13, scored 30 and 38 respectively, although week 13 had Darcey as a 5th judge - without her would have scored 31)
Ricky Whittle (series 7, week 2, scored 32)
Matt Baker (series 8, week 7, scored 35)
Harry Judd (series 9, week 10, scored 36)
Ashley Taylor-Dawson (series 11, week 10, scored 35)
Patrick Robinson (series 11, week 11, scored 36 including a 10 from Darcey, which is the first ever 10 for a male Rumba)
*Simon Webbe (series 12, week 3 - technically he scored 30, but it was with Donny as a 5th judge, and without him would have scored 23)
Mark Wright (series 12, week 12, scored 33)
So only 13 (or 12 if you discount Simon, I've only added him in for the sake of pedantry) across the entire 12 series that have been completed thus far.