Hello MtechMatt,
Using the reference viewer is on the right track. Another tool I like to use when ‘untangling’ these things is ‘Tools → Find in Blueprints’ that will allow you to search function names to see where/how they’re being used.
Zondyz does bring up a good point about C++ though, I think what you’ll find is that as you go up the hierarchy you’ll reach a point where the parent is a C++ class.
Since you mentioned you’re new to Unreal, Lyra is a bit like jumping in at the deep end. (But certainly worth poking at these systems)
Welcome to the forums!