I want Islam vs Dariush since it aligns with the timeline and also could be for a #1 contender. But RDA may very well get that fight if Gaethje doesn't answer Chandler's callout and decides to just sit. The UFC may do RDA vs Islam and Chandler vs Dariush (This one is for #1 contender).
Gaethje-Chandler is still the fight to make. Just because it hasn't happened yet doesn't mean it won't.
The rest I don't really care about. Just a few days ago I said I wouldn't be excited for Islam-RDA because I think I know how that fight would go, but RDA is starting to make me want to see it anyway. But really, Islam, Dariush, RDA, Hooker, Gregor...throw darts at a board to make the matchups. The only fights I definitely would prefer are Oliveira-Poirier and Gaethje-Chandler. Tony's the only one you'd have to be a little more strategic with and frankly, I don't see a ton of good options for him. Maybe Hooker?