@Nolan Gray awesome work man, we have a big advantage by finding the power of real estate at a young age and acting on it. So far we've gotten joint mortgages as well as mortgages just in his name, then adding to our LLC operating agreement that we have equal ownership in that property, even though his name is on title. I would only do this with someone you absolutely trust, and some more experienced investors may say this is not the way to do it, but it has worked for us so far.
Moving forward, it's getting harder to work with conventional mortgages, so we are looking at portfolio lenders as well as big banks that have loan programs designed specifically for real estate investors. It may take a while and some hustle, but you can find banks that will lend on the property based on its cashflow, your credit score, and your experience. They will allow a higher DTI or not look at that at all because they understand you are building a portfolio and have the credit history to maintain it. Rates will be higher, but it's better than not being able to get loans!
My wife is from the Milwaukee area and I've heard there's a lot of opportunity for investors there!