This is all helpful.
i did read another review here that adds clarity:
https://upgradedpoints.com/travel/ai...s-plane-types/

But I’m still not clear; Are the 787 and A350 seats identical?
And do the bulkhead seats on both 787 and A350 have extra footroom?

if I can get bulkhead, I’m leaning towards 787/A350, but if not, then maybe the old-school 777 is a better choice for a proper, stretched out and unconstrained sleep….