You should check out some of the ccTLD analysis I've done over the last couple months. I generally analyze 1 new ccTLD per day. Once done with those, I'll move onto gTLD's (And then, maybe alternate-root blockchain).
Sometimes, not all the time, I share some of the domains that made it to my short-list and passed on in the available domain section.
They may be gone now, but here's a few of my shares that included 2-letter domains:
I like short 1, 2 and 3-letter (or number) domains as well, but cherry pick them. So I'll probably be sharing more available lists like those in the future as I uncover them with each TLD analysis i do