Have you done a search on Houzz, as well as a general internet search?

I like the way this house is finished with simple cove crown molding. I like that the molding is white, but the door is stained wood.

Where the ceiling is slanted they omitted the crown molding; much cleaner look for that area. The base molding is quite generous.

Palmetto Bluff - Private Residence · More Info

Palmetto Bluff - Private Residence · More Info

Metrie's website has some good homeowner guidance about coordinating styles and such. Even if you don't source material from them, it can be a good starting place.

https://metrie.com/

One can never go wrong with traditional molding styes, painted white. They've been around forever and never go "out of style".

My favorite place for all that is molding:

http://www.thejoyofmoldings.com/diy-molding-design-series/