First, just to get it out of the way, you are talking about running multiple “Bridges” not multiple “hubs.” And, yes, to answer your basic question there’s no general problem doing that with SmartThings although it always comes down to the specific brands and models being chosen as to what exactly you can do. SmartThings is a multiprotocol platform, and many people mix and match lighting devices based on their particular needs for each specific room. 
As far as specific devices, If you think of Lighting Devices as falling into Good/Better/Best categories, then GE is a solid bargain brand, at the high end of the “Good” category in terms of engineering.They are very popular because of their price, and good enough for many purposes. They don’t have as many configuration options as the more expensive brands, and they don’t dim as low, but they’re widely available.
See the device class features FAQ (this is a clickable link) for more details. The Light switches discussion starts around post 40 in that thread. 