The main requirement is for the person to be on the project and have skin in the game. An architect will often have more of a bird eye view and not be actively

The main requirement is for the person to be on the project and have skin in the game. An architect will often have more of a bird eye view and not be actively working on a specific release. They might also not care about the business side. IMO depending on the org, the matching role would be either a release manager or a project lead.