As noted many of the better less-well-known strips have recently been reprinted in the unmissable Tharg's Sci-Fi Shockers, such as Family, Xtnct and Tribal Memories, and some other rarely-seen treats like The Inspectre are currently inbound.
Just a few other lesser-spotted gems: Shadows, state conspiracies and consciousness by Milligan and an unrecognisable early Elson; Medivac 318 by Hilary Robinson and the criminally underrated Nigel Dobbyn, 2000AD's lost war story; Satanus Unchained, by Grennie and Colin MacNeil, a wonderful romp with lurid dinos that spawned a dozen bilious Pat Mills forewords; London Falling by Spurrier and Garbett, a very fine entry in the 'Mythago City' subgenre; Slaughter Bowl, by John Smith and Paul Peart, more lurid dinosaurs, these ones with chainsaws of their own; Dead Signal, Ewing and Holden, artistically adventurous existential weirdness that needs to be continued.