Other companies involved in FHE are Zama, Duality, Intel, Inpher, Cryptolab, and a handful of companies working on hardware accelerators. In my view, the one company that has a bona-fide production application is Cryptolab. As I understand it, their work is used to do private contact tracing for COVID in South Korea.
You may also want to check out the two yearly conferences on this topic: https://homomorphicencryption.org/ and https://fhe.org/, the latter posted videos of all their talks from the meeting last month.