[redwards510]

Custom ROMs are rarely developed for Samsung devices these days because Samsung locks the bootloader and makes everything extremely difficult. Buy a device that is more developer-friendly like a Nexus, Pixel or OnePlus and you'll see a much larger selection of custom ROMs.

[jdofaz]

The last Nexus was released 4 years ago. The two pixel models and the OnePlus 7 make 3 choices of currently manufactured models.