You might enjoy this video that attempts to rigorously define how many "mainline" Mario games there are among the hundreds that exist. https://www.youtube.com/watch?v=XejJ6PzPtEw
also the results of these findings could be combined, from the glimpse of it for the "super mario" series specifically BGYRG is a more prevalent color sequence, while RGYBG is more common among sports spin-offs