packs with similar style to Lemmings Plus out there?

(speaking of which, Lemmings Plus 3 is nearly completed, nearly through Wakizashi(third difficulty level out of four) so far. No new styles, but quite a few new level ideas, I can post some more information if anyone's interested)

If you mean a large series of levels divided into 4 to 5 sets of allegedly increasing difficulty, then Peter Spada's (Essman's) sets should qualify.

Yep, exactly what I mean.

Are you referring to the Copycat Lemmings 1 levels or more sets he's made from Cheapo?

I think they are the Copycat Lemmings levels, but for Cheapo.

I've got a series that I'm working on every now and again, but it's slow progress. Also, it uses new styles that aren't ready for release yet, but when they are I may release them together with the levels "so far".