Can't see there being a 7600XT, unless it is just a faster clocker, higher TDP version - there is nothing left in the Navi33 core to unlock.
I think the leaked 7700XT specs may actually be for the 7600XT.
AMD Navi 32, 2544 MHz, 3456 Cores, 216 TMUs, 96 ROPs, 12288 MB GDDR6, 2250 MHz, 192 bit
www.techpowerup.com
I'll revise my
previous statement - in that I think the leaks regarding 7700XT may actually be for a 7600XT (i.e. just a faster clocked version of the 7600)
I still think the 7700XT will be a 3072 shader part, assuming it's a chiplet part then it will have 3xMCD to get the 192-bit bus. (essentially half a 7900XTX)
7800XT would be a 4x MCD for 256-bit memory bus, possible with 4096 shaders, to maintain similar sort of ratio to the 7900XTX / 7600, but that would be less than the outgoing 6800XT, and only slightly more than the 6800.
There's room for a non-XT 7700, and 7800, but it depends how much the shader count can be varied with this architecture, as it's unlikely that the chiplet design would allow any in-between steps for memory buses (e.g. 160-bit, 224-bit, 288-bit)
If 7600XT is just a faster clocked Navi33, then it's likely that the Non-XT/XT versions of 7700 and 7800 would just be clock speed differences