Successful TikTok Franchise / Chain accounts?

I'm looking to prove a point that it's better for a chain/franchise to have an account for each of their individual branches AND a main account rather than one main account for the whole brand/company.

I’m starting a creative agency and want to show that decentralised content (made by actual staff) beats the polished HQ stuff.

Looking for examples where this is done well. Could be gyms, cafés, fast food, whatever.