Isn’t there an early script where Luke is older than Annikin? I’ll try to find where I saw it.
That would be the first draft. Luke was the Obi-Wan figure with Annikin playing the hot-headed apprentice.
I really like reading the old Star Wars drafts, and older drafts of the prequels. Somehow, when you just read a premise, what you briefly imagine ends up being better than any movie actually is.