If I were to create my own race:
Stepfather/Daughter (M/F)
Platonic Life Partners (M/M) (nothing romantic, just friends for life)
Older married couple (M/F) (always gotta have one of those)
Newly Dating Couple (M/F) (drama??)
Aunt/Niece (F/F)
Distant Cousins (M/M)
Party Animals (M/M) (they'd be fun)
Athletic Pair (F/F) (Williams sisters?)
Long lost siblings (M/F) (interesting dynamic)
Newlyweds (M/F) (will their relationship stand up to the race?)
Dating couple from eHarmony (or something like it) (M/F)
Sorority Sisters (F/F) (nice alternative to the Frat Brothers)
if i had to make a boot list:
1st: Distant Cousins (M/M)
2nd: Athletic women (F/F) (again, a female team comes up just short...)
3rd: Long Lost Siblings (M/F) (becomes the feel good team of the race, but doesn't get lucky in the end)
4th: Newlyweds (M/F) (arguing gets the better of them in the end)
5th: Stepfather/daughter (M/F) (got outraced once the competition heated up)
6th: Platonic Life Partners (M/M) (U-turned because they were the toughest competition)
7th: Sorority Sisters (F/F) (got unlucky, probably fell victim to the India curse)
8th: Dating Couple from eHarmony (M/F) (got outraced)
9th: Older Couple (M/F) (were too slow)
10th: Aunt/Niece (F/F) (got lost in self-driving)
11th: Newly Dating Couple (M/F) (arguing got the better of them)
12th: Party Animals (M/M) (didn't take the race seriously and focused too much on having fun and taking it easy)