Sole Proprietorship or S-corp for business funding

I have been having issues with funding for my next property and have been researching business credit. I currently hold my properties in an LLC but as a sole proprietorship. It appears that if I completely separate taxes by incorporating as a different type of entity I can get funding without the lender taking into account personal income. Have I been missing this the whole time? Is this the key to unlimited funding or am I not seeing the down side?