Creative financing to acquire investment property.

Does anyone have experience using existing properties as leverage/lien in order to acquire a new property? I understand I could cash out refi but with time lines extended, banks tightening standards on cash out, and our need for a faster solution I’d rather put the property, which has significant equity, down as the leverage for a new loan for purchasing a new property.

We have a rent roll option with 25% down at 7% interest

Hard money at 8% but only for 6 month time frame.

We’d like a more competitive option that uses existing assets rather than typical credit standards.