Faolyn
(she/her)
In my Handbook of Heritages, two of them (animalistic heritages) got the ability to pick maneuvers from Tooth And Claw, if they were members of a class that allowed them to take maneuvers. I could see giving a multi-bodied heritage the ability to pick maneuvers from Sanguine Knot.Cool idea, but I’d like to pose a counterpoint for the sake of discussion: One of the fun things such a race could do would be to flank, or use Sanguine Knot maneuvers on themselves.
If they got a slight HP boost, this might work better. That way you could have two bodies with maybe 2/3 the HP of a normal character for their level. One body would be less likely to die that way.
Now that I think of it, a multi-bodied heritage doesn't have to be two full people-type bodies. You could even go for a type of creature with an exterior soul of some sort.