I would classify both of these artists as tech-house/techno.
For reference, x|k's three amazing albums:
http://www.8bitpeoples.com/discography/8BP046
http://www.8bitpeoples.com/discography/8BP058
https://archive.org/details/m3d049_baudOfPassion_by_xik
Delta's stuff gets nice, fast and gritty, and has minimal elements, which I like.
https://soundcloud.com/deltanoyz
Does anyone have artists or tracks they could recommend?