As far as I know, the current lineup is PNY still makes the workstation cards, possibly also the x16 server cards, but Foxconn is doing the Blackwell SBCs and MXMs, and those SBCs are a pretty big chunk of Nvidia's income right now. I also believe they have moved to Foxconn for the Founders Edition consumer cards.

Also, with the FEs, their partners are disallowed from making their own FEs, even if they make their own PCB from scratch and not based on any existing Nvidia design. Doesn't matter who makes the FE, it immediately puts partners at a great disadvantage if they can't make one too.