Living Lightning Support interactions

What do we know about this support gem?

It does actually interact with some adjacent support gems, but it's really hard to verify which ones. E.g.,
if you use overabundance support, you'll be able to have 9 orbs at once.

Do certain passives effect it? Supposedly its a kind of 'trigger' gem, but also a 'minion' gem. I've heard mixed/opposite things.

Interested as well. Not sure if minion buffs or anything minion related affects Living Lightning