Worse versions of existing competitive commanders/decks - another facet of what makes a deck competitive is not choosing to play something that's consistently going to perform worse than another build with the same strategy (for example Prime Speaker Zegana/Keruga, the Macrosage could also be a solid Simic Food Chain deck, but Uro, Titan of Nature's Wrath is the best choice for this kind of deck for cEDH)
Glorybringer is another savage threat that comes with a free removal spell built right in
First of all, it costs more to cast than both, no matter what
Grenzo, Havoc Raiser and Daretti, Ingenious Iconoclast stride through the collapsed gates
Atraxa, Praetors' Voice The combination of a pushed body in four colors and a guaranteed proliferate every turn makes Atraxa, Praetors' Voice one of the most popular commanders
It comes with some strong keywords, cant be countered, and protects itself on the battlefield with ward