Can you avoid personally guaranteeing mortgages through business?

[Adolphus Fletcher]

Let's say I already formed a new LLC that would be designated for REI. How do I get business credit strong enough to avoid having to personally guarantor commercial or residential mortgages through my business? Is that unavoidable in the beginning? Does it matter if it is an LLC or S-Corp? When I talk to loan officers they say a DSCR loan would be ideal for even a newer LLC because it's more about the numbers on the deal as long as you have the cash for the average 20% and whatever points down. My only reservation is the higher interest rates on these particular loan products vs regular residential mortgages. Let me know if I'm looking at this all wrong or what you'd suggest.