You can play the Emperor in aggressive or midrange decks too, enhancing your little dudes with +1/+1 counters or making more tokens
For two mana, you can choose between: flashing out a creature
There are several non-creature morphs in Magic, though your opponents don't know that they're non-creature permanents until you surprise them with it
At the beginning of combat on your turn, if you both own and control Graf Rats and a creature named Midnight Scavengers, exile them, then meld them into Chittering Host
Strixhaven offered some colorless only sorceries, but there's also the potential for huge X-spells with massive cost reduction tacked on
Artifact synergy is one of the cleanest and most effective ways to run away with a Commander game, and Ravenous Robots is another entry in that tried and true tradition