At least three of the collections cited above with which I am familiar deliver an in situ experience reflecting the culinary taste, decor and ambience of their various settings: Oetker, Rosewood and Belmond.
Most corporate environment goes to Four Seasons and, sometimes that is not so bad. FS hotels are very similar; their resorts not so much. Actually, that is true of many brands listed; their urban hotels are often similar, their resorts more successful in displaying a more local look and feel.
Both Mandarin Oriental and Peninsula well represent their Asian roots in most venues, blending this with the local environment.
That's what I think, anyway.
P.S. some brands in the list don't achieve luxury in my book.