This is 3 months old, but relevant here: https://hothardware.com/news/intel-g...s-big-overhaul
On the high end I'd expect a 512 EU Xe to be as fast as a 4096 core Navi, and as big as a VII.
A VII isn't the mother of all silicon. 2x VII would be pretty big, but that would be 1024 EUs.
Lot of unknowns with Xe.