https://www.klevv.com/ken/main
And don't forget about https://www.nanya.com/en/
While I never had a problem with https://semiconductor.samsung.com/dram/module/ , I think they will be rare/more expensive now, or 'soonish'.
For chinese CXMT and YMTC there is https://www.biwintech.com/
We live in interesting times!
(Cackling madly...)