You really have to check what is intended performance for the a/c since each model has different objectives.
BAE 146 was a good example.
I would advise you to check online development for 737 and 747 info. That would give you a better picture on different approaches.
You can also try to find something on DCs (8, 9, 10) since most of the other solutions are obvious there.
Kroger's are nowadays dropped and if you check new solutions it's more modifications of the old stuff found on originating a/cs (Boeing, Douglass and Aerospatiale/Sudaviation for Airbus).
Overall I think you can get an answer only ona case by case basis. And even not to talk of russina/ukrainina a/cs and older stuff like ofr example Junkers type of flaps or solutions on older 2. WW bombers (both British and American).