Hyundai says Tesla's Supercharging network will fully support the ultra-fast charging speeds on its E-GMP vehicles, including the Ioniq 5, Ioniq 6, and Ioniq 7.
There being actual standards process on going and so on. Mind you for benefit of Tesla, they did make good on their promise to make it freely available and have already issued a Patent Assurance Letter to SAE.
The only ones I was aware of that didn’t use CCS were Tesla and Nissan.
Correct. But that also means the majority of cars on the streets were/are using NACS (as Tesla dominates sales). Now almost every notable company has agreed that NACS is the connector to standardize around.
A big thing that hurt CCS is the charging networks are inferior to NACS networks. They just aren't as reliable. (And that isn't to say a CCS network couldn't be reliable, it just is that the copmanies that built them out never cared enough to make them as reliable). Manufacturers with CCS cars saw themselves at a disadvantage due to the poorer quality network their cars were using.