It's a variety of WoBs where people have pieced together a rough timeline. I like this one the best.
https://docs.google.com/spreadsheets/d/1JJtJhHwpKdow01n2-bsT3scVvqJd6lZh4uvpNwcslv8/edit#gid=0
Hmmm okay. I guess I just don't agree, because I like how the series is working out so far. Different tastes, I guess If SA isn't your cup of tea, no worries
If it helps, I believe Shallan gets the most screentime in OB according to the OB Statistical Analysis. And you get to see a lot of her inner thoughts and...issues.
And Brandon definitely knows how SA is supposed to end. I think he's said that he's already written the ending, and that how it's going to end is hidden somewhere in the first two books.
OB statistical analysis (Possibly spoilers)
https://coppermind.net/wiki/Oathbringer/Statistical_analysis
All the ones who refused Stormform fled. They likely took the children and elders with them.
I'm betting that's why Rlain was missing from the second half of Oathbringer--he went to find them.
But what about how it has to be refined, unlike all the other god metals we've seen? And the fact that it's present on Scadrial, which was created after the Shattering, when Adonalsium would no longer exist?
I don't think so. The god-metals we've seen have all been pure versions. As in, there's no refinement involved for atium, lerasium, harmonium (that we've seen), the Shardblades, etc. Aluminum needs to be refined and occurs very rarely in nature.
Domi is based on Aon Omi, which I think means Love. It does seem like an odd coincidence, doesn't it? Ah well. Also, remember that "Dominion" wouldn't be spelled or called exactly that in Aonic. That's our word for the concept of Dominion. Their word is probably something else. Whereas Domi is a name so is probably "translated" verbatim.
Heralds have the same abilities as surgebinders, they just don't need spren in order to use them, they use their Honorblades.
Kaladin seems to just use Adhesion to create some pressure/vacuum shenanigans. What Dalinar did, I don't think anyone who isn't a Shard has been able to do before.
So far, all of his non-Cosmere works have referenced Earth in some way (alternate universe, historically, currently, etc), or have been written as part of a specific other series (WoT, Infinity Blade, etc). So that's the easiest way to tell for now.