I was expecting some pure chiptune tracks, but LukHash is actually really cool, and manage to make it sound very modern.
For a similar artist, try checking out MDK. He has done 3 soundsets for Serum, called 'Limitless'.
If you just want pure chiptune, I would have thought inSIDious would be the best choice.
I don't have it, but I have Super audio cart and it does have a vaster range of sounds than inSIDious, although not as flexible as it's sample based. And it covers a bit of the Amiga 16-bit sounds, which you won't find in inSIDious. But I didn't hear anything 16-bit like in the LukHash videos, so maybe that doesn't matter to you.
If you have Avenger, they have both an 8-bit and 16-bit expansions, which sounds great.