Assisting with enquiries

I found some old, old minis the other day. Most of which I don’t know what they are.

I think this one is from Citadel, an Aly Morrison cave troll from the 80s (complete with 80s paint job!):

But I don’t know who this bad boy is?

Plus some skeletons, also from the 1980s, by I think Ral Partha, along what looks like Fiend Folio era githyanki and some goblin-looking thing:

Any insight into this hazy trip down memory lane would be much appreciated.

Cheers,
D.