I'm currently compiling statistics into another excel file, but for now some interesting facts I've seen
The rarest team type (MM,MF,FF - Family,Friends,Couple combination) is the FF-Couple. Only 2
of them have been in the Race (Kate & Pat in S12, and Carol & Brandy in S16).
This is followed by MM-Couple with 8
, counting repeat seasons: Joe & Bill (1 & 11), Reichen & Chip (4), Lynn & Alex (7), Tom & Terry (10), Ron & Bill (19), Josh & Brent (21), Tim & Te Jay (25).
Third rarest is MF-Friends with 9
, counting repeat seasons: Flo & Zach and Aaron & Arianne (3), Russell & Cindy (4), John Vito & Jill (11), Ari & Staella (12), Joey & Meghan (22 & 24), Tim & Marie (23), and Mark & Mallory (24).
After that (counting repeat seasons and season 25):
Also, there have been at least 4 MF teams per season (5 seasons have 4 MF teams) and a record of 8 MF teams (season 6). Meanwhile, only 2 seasons have 4 FF teams (17 & 25), the most of any season, while season 15 have the least (w/ 1 FF team). MM teams have a range of 1 (3 seasons) to 5 (2 seasons) per season.