tl;dr + silver bullet
FYC is a subsidiary of AMA Multimedia as cited in their Privacy Policy. AMA Multimedia owns the trademarks for the PornPlus/ PornPros brands ^5
Ownership
All of the FYC subsites are owned by Whale Member LTD^1 / LLC^2 as are all PornPlus sites.
2557
They also all share a 2557 contact, although some of the PornPlus sites have an older name of K. Walton^3 while the newer ones all have C. Park at the same address ^4. FuckYouCash (FYC) on the other hand, has Mark Randezza as the 2557 contact ^6
Trademarks
All of the trademarks for PornPlus and PornPros ^5 are held in the US by AMA Multimedia LLC / https://amamultimedia.com/ which is also managed by Adam (David) Silverman
Adam David Silverman
Cited as the EP for multiple PornPlus sites ^7 and on the board of directors for most, if not all holding companies associated, it is safe to say that it is all managed by the same person(s)
FYC Exclusion
While FYC has a different 2557 contact, it is a subsidiary or Doing Business As (DBA) AMA Multimedia LLC. The 2557 contact is the aforementioned Mark Randazza ^8 who represented AMA Multimedia in court against ePorner