Make sure that the Bus Width for the memory is 256 or above. (Bus Width can be quite the bottleneck). When I buy a new GPU, I look at the api support (DirX 12 for Windows and OpenGL for Linux). Don’t get too hyped about the HBM from AMD, 512 bits is plenty, and so is 256 bits. “PCIe 3.0 ×16” is also something I like to look at as a priotiry. For VRAM… depends on if you are programmer or an artist. Developing Minecraft takes less VRAM than Developing a fanzy movie.
I hope this helps you find a good GPU 