They look to be pretty generic run-of-the -mill liner locks. Nothing looks to be a copy but nothing looks terribly original. I have concern when I see knives under one brand claim to have D2, 440 and AUS8 steel. AUS8 is particularly dubious given the point of origin.
I think you can do better with a CIVIVI, Vanguard, Bestech or QSP for a few dollars more. Consider even a Kershaw, Spyderco or Byrd. These Ultra X knives feel like an eafengrow that isn’t a clone.