UHF bandwidth question

After all the licensing and research I am still a little confused about bandwidth. I have several radios that I need to program. Some need to communicate with bubble wrap FRS/GMRS radios. And some that need to be programmed for business band UHF.

My question is this. FRS uses narrow band. GMRS uses wide band. What about the FRS/GMRS channels? And what about business band?