I feel like giving credit is the least you can have done. If you had time to compile all this then you should have time to give credit.
But from what I see and know I see.
Summerfields
lipki
tobyplowy (toby109tt) aka me
CuddleWoozle
chengzzi89
SilverLimit
kingoscargames
Snykeurs
Milktache
Marcinz606
Card
Sixdd
jaygradon
Physignatily
lunapanshiel
Epic adventures
Credit me (toby109tt)
I see John Smith I don't know who worked on that you'll have to look on the site.
I see conquest credit for that goes to monster fish and the community again I don't know exactly who but you can probably also easily find it.
And some others.
I don't think anyone really agrees to the packaging of the art they made like this. I don't. This is not something I like.
Anyhow hope this helps.