This WeakAura highlights the optimal target of Adaptive Swarm under Unbridled Swarm. It can also highlight a focus target to keep Adaptive Swarm on if so desired.
It will select allies by the usual stack count order of 2, 1, 3, 0, choosing lowest health allies first when at 0 stacks.
Adapted from the work by KnewOne: https://wago.io/0P93t1-nG This is basically a rewrite to deal with some of the issues his version had at the time and clean the code up significantly.