I'm going to discuss the top pick for each one
While Ertai isnt the most exciting option for a Commander, it is a flexible interaction piece that can be fetched with Recruiter of the Guard or Wizardcycling
Even though I am skeptical about how effective this archetype will be in Limited, the card still provides essential utility, reflecting the Room cards' consistent theme of cheap access to both effects now and later on
21 Abdel Adrian, Gorion's Ward Among the most underrated white commanders in Magic, Abdel Adrian, Gorion's Ward was printed in Commander Legends: Battle for Baldur's Gate and can be played alongside a Background
Act of Treason, Act of Aggression, and similar spells to temporarily claim enemy creatures for your own use
This means that cards like Lightning Greaves and Sword of Hearth and Home might keep you from saving a few of your permanents, but that's still better than losing everything