If I were to approach a seller of a $200k home, and they had a remaining mortgage of $100k, could I get a new bank financed loan for that $100k, and have the seller finance the remaining $100k of equity to me?   

If the other two parties want to flip a house maybe they can do just that as partners and then sell you the house which you can buy with a primary home loan with low down payment.

And you have to pay PMI for the life of the loan.

While you work on that, you could also explore creative financing options like DSCR loans or partnerships to fast-track your first STR.

In many countries foreign investors buying rentals can't get loans or loans at all. 

Quote from @JD Martin: I would have to see actual data on a median & value adjusted basis to believe that OK is anywhere near Fl on a dollar for dollar comparison.

A few small touches, like high-quality linens and a welcome guide, can make a big difference. 

I have also been doing quite a bit of research on Loan's, tax consequences etc., and am working towards being a expert in this niche.  

There is a flaw in the business model and thier internal processes need a lot of work.First the good,Yes, I got paid every month.Nomad found me good renters.Next the badDue to needing to make the guaranteed rent they rented my unit below market valueIn communicating with Nomad they were disorganized, often sending conflicting messages and not alignedNomad offered to find me a repair company, that compnany charged $400 for a $25 dollar part and I was stuck with Nomad saying "not their problem" and the vendor saying Nomad was the client not me.Nomad was horrible to my renters as their property management term ended.

I’ve bought 5 houses from 401k loans too.