It's more interesting to see which companies have / had controller tech and haven't continued with it.
Kioxia will have inherited Toshiba and OCZ/Indilinx controllers, but seem to have let most of it fall by the wayside.
SK Hynix purchased Link-a-media (LAMD) and used it but am not aware of them carrying it on.
In theory, they both have the capability to do it all in house.
As for the others;
Seagate had Sandforce and LSI at some point and then just never bothered with them - in theory having all the expertise in house except for NAND fab production itself (but definitely the R&D capability).
It's kind of ironic that the of the original NAND flash controller manufacturers (who also did more than just SATA/NVM SSD drives, e.g. USB flash, etc.), Phison and SM seemed to survive as independents - ironically the two that never chased high performance back when the commercial SSD explosion circa-2010 kicked in.
Technically JMicron were also Toshiba linked but seemed to remain independent - they since spun the SSD controllers off to MaxioTech.