I'd rate _Stardust_ as one of the best things that Neil Gaiman has done. Don't forget it again :-)
Strangehaven is a self-published job with an irregular schedule so it's not surprising that it's relatively obscure. Definitely worth a look, though. Two collections so far.
(This reference may mean nothing to anyone outside the UK but the closest thing I know of was a TV series _Children of the Stones_ )
I Don't recognise the "Amazing Screw-on Head" title. I have all the Hellboy collections, as well as the BPRD collection, all three "Hellboy: Weird Tales" comics, and Soul of Venice.