Non owner occupied Lendor with lower than 20% down payment

My wife and I currently own and occupy a 2-unit property. Things have been going great and we are going on 5 years living here. We are looking to buy a second property hopefully a 3-4 unit.

Most of the properties In favorable condition have been in the 125-150k price point. Our main problem right now is that if we don’t plan to move into the property then every lendor I have spoken to considers it a commercial loan which makes the down payment 25% or 20% at best, which would wipe out more of our savings than we are comfortable with.

Does anyone know a mortgage product or lendor that will offer something for a non-owner occupied investment with less than 20% down, preferably 15% or less?