Unsure about Royal Oak, Birmingham, or Berkeley, but nearby in Oak Park there is.
-Prime Ten nicest venue fleishig
-Jerusalem Pizza delicious pizza and amazing calzones
-Daves Gourmet fleishig
-Kravings fleishig and sushi
-Chef Carrie Google her
Much further out in West Bloomfield is Soul Cafe I highly recommend it's excellent! Look into it! There is also onsite an art gallery and studio that shows special needs peoples work
There's also Wok in Cari Out, which is Chef Cari. And she has a food truck; fish n chips, shwarma..
There's Pizza Stop inside the One Stop grocery store.
There's a kosher Dunkin Donuts/Baskin Robbins.
And a couple kosher bakeries. Zeman's and Bake Station.
Of course there's One Stop Kosher, which is the grocery store. They have prepared food too.
Oh, and Chazzano's coffee.
Not sure how strict you are but there is Menchie's and Oberweis ice cream, and places like that, that have "kosher" stuff (not under the vaad).