When you start a company, you must do everything you can to ensure you clearly define roles, responsibilities, and titles for everyone. You must minimise the degree of overlap in decision-making between roles because this will cause complication down the road. If you have a top-heavy structure in the early stage, this will likely create tension between founders.
If the idea of the startup comes from you, you’d likely become the CEO of the company. You’d be the most passionate because the startup is your “baby”. While your partners may wish to share the responsibility with you, it’s effective to have one decision maker that calls all the shot. A “dictatorship” may be necessary in the early stage so that the strong CEO can go all in behind the idea. Don’t make the mistake of having multiple decision makers, that is likely an excuse to avoid confrontation.