To begin with, Wayne is absolutely not #2 in state. With admission GPA for ACNP below 3.0, it cannot stand even UofM/Flint because of weak academic standing of matriculating students.
On the other hand, WSU Medical center has tons of Canadian staff, including NPs. Their department would, probably, be very expereinced with Canadian paperwork, which is a BIG plus.
- in the US, Master's IS specialty. You do not apply just for Master's in Nursing. You apply for Family Practice, Acute Care, Primary Care, Peds, Psych, Midwifery, Leadership, etc. What you apply for determines what you will study.
Once you got your Master's in one specialty, you can apply, study, take Boards and receive post-Master's degree on any other specialty of your choice. The limit is set only by your ability to study, pay and keep active certification for specialties.
- All universities in Michigan will gladly accept Canadian grads who are able to get admitted and pay for stydying, but not all are equally fitted to work with them. You must have be licensed as an RN in the US to be able to apply, so you should jump through some hoops for that, but, AFAIK, it is not that complicated.
- figure out the question about clinical preceptors right away, because I doubt that any school would approve Canadian clinicals. If not, do your best to get into a school which provides preceptors (primarily, MSU/Lansing), because with no Michigan work history and personal contacts it would be very difficult for you to find preceptors.
- narrow specialty programs (Midwifery, Neonatal NP, CRNA) always require significant clinical experience before admission and may not recognize same specialty experience in Canada
- Good programs are highly competitive with undergrade GPA >3.75. My class mean GPA in UofM/Flint was 3.89 and acceptance rate 13% (that is, 87% of applicants rejected). UofM Ann Arbor is even more picky.
- Online program looks like this: you do the same readings, lectures, classes, etc. like in normal school, but do that entirely online using apps like Blackboard Classroom. Most exams are done online with you being watched through camera at all times. Depending on the program, you might have to go on campus; in my program, it was an average 2 days every semester. Clinical experience is done in place you (or program) arranged, at average 16 to 24 hours/week where you are taught 1:1 by your preceptor.
As your professors are aware of students "just sitting home", they tend to load online courses more with readings and lectures, as they do not have any time constraints. An average reading load was around 300 pages/week, plus 200+ slides lectures.
Do not trust ANY "ratings". Too many of them are paid by programs, and the very first Google on "nurse practitioner Michigan programs rating" will give #1 to South University, which is a known diploma mill. Counting that your situation is rather unique, you probably will do better if contacting programs one by one, starting from UofM, and see what they want you to do.