I would like some Necromancers in space. Or just some well written book from Necromancers point of view. Something not in litRPG.

The second book in the series, Harrow the Ninth, is from the PoV of a necromancer, although from my understanding it's also written half in 2nd person and non-linearly for a large portion. (Very much a "don't start here" situation. The first book has a decent amount of skeletons, bone constructs, stealing life essence, death, etc, though, just from an external PoV.)

There's also the Johannes Cabal series by Jonathan L. Howard, which has been sitting on my list for a while. I haven't read it yet, but I did enjoy the other book I read by that author, so it might be worth a look?