My Top 5 most ridden are:
Vekoma, 102 coasters, 13.7% overall
B&M, 74 coasters, 9.9% overall
Intamin, 55 coasters, 7.4% overall
Mack, 54 coasters, 7.2% overall
Arrow, 47 coasters, 6.3% overall
Full table here (won't embed as it's quite long): LINK
I also keep a track of how the proportions...