@dramypsyd
The ideal scenario for those operating the levers is one lever pulled.
First you determine if one of the dudes on the tracks is just a racist uncle - easy choice. If not, you toss a coin with the other person for fairness.
Sacrifice: 1 family member (probably just your racist uncle), 3 strangers (probably racist uncles, too).

No wait, ideal scenario is two racist uncles, no levers pulled, Thanksgiving dinners improved! (*draws tiny MAGA hats on uncles tied to tracks).