Baylor, Pitt and NSU all require the BS/MD/DO students to take the MCAT and achieve a certain score to advance to medical school. So if avoiding the MCAT is your goal, take these schools off your list. For Baylor and Pitt, the scores required are about the same as for students admitted through the regular decision process (in the 515 -519 range.) NSU is modestly lower than those required for regular admission.
And as @thumper1 alluded to above the MCAT is just the first–and the easiest –of the standardize exams med students take. USMLE and COMLEX are harder and longer. (BTW, if you go DO, you’ll probably need to take both the USMLE and COMLEX since many academic residency programs and most competitive specialties will not accept COMLEX scores.)
BS/MD programs, especially the compressed programs like UMKC (which is 6 years), do not allow much time to explore. UMKC requires student to attend summer classes both summers of their undergrad program since med school begin during what would have been their college junior year. Other BS/MD program may have summer requirements. They certainly have benchmarks you must meet w/r/t fulfilling a certain number of hours of ECs.
As for “easing into med school“ — 
There is no such thing as “easing into med school”. Med school is drinking from a fire hose. You’ll be taking the equivalent of 24-28 hours of rigorous sciences each semester for the first 2 years. Plus all the other required academic and non-academic stuff students are expected to do.