Nice idea and overlaps: 1 group in particular was ridiculously obscure tho

I think the very best grids are the ones where you go "Ohhhh, of course" when you see the link. 3 of the links here could fall into that category - the 4th is more a "How, who and what the fck?" sort of reaction. Definitely one for someone with very (very) specific knowledge. Nothing wrong with that but there won't be many 10/10 scored here.

Agree with the other comments - in a good grid, you'll understand the connection when it's revealed, even if you didn't spot it. But the vast majority of people are just going to shrug when they see one of yours - it's something most people haven't even heard of, let alone seen.