Can you build strictly on curve with any low cost commander? (No ramp)

Question to all deck builders!

As the title says, if you commander is relatively lost cost (3 CMC), do you even need to add ramp are do you base it on the game-plan of the commander?

I’ve recently built [[Raffine, Scheming Seer]] which plays on curve without any ramp added. It feels great and I would love to incorporate that into my regular deck building.

Can it work with anyone?

I’ve been intrigued by [[Evereth, Viceroy of Plunder]] and I want to try the practice similar to Raffine. All curve, no ramp (aside from the obvious treasures specific to the deck’s strategy).

I’d love to hear your thoughts!