It is really hard to me to answer this. I was able to find a private Russian-based registar, which at least on the surface has no ties to the government or government-controlled entities and works with ICANN directly.
Other people are trying to move to Cloudflare -- but my banking cards are already not working, and I can't pay in USD for their services. Plus to that, even if somebody manages to move to Cloudflare or GoDaddy, there's no guarantee that they won't pull the plug as well.
That raises a question: how to find a domain registar without a lot of Ukrainian employees ?
According to the recent leak, Epik has them a lot as well.
Could we crowdsource such a list of registrars sorted by nationality of their employees to be prepared to the geo risks?