Hi Patrick your profile doesn't say where you are from? Here in GA small towns / rural areas locals will do something stupid like this, often to house relatives all jammed together on one legal lot. Some times those mobile homes have been setup illegally. Counties fought back against owners doing this buy setting large sized lots some counties >1acre some even >2acre.
Yes you could buy such a mess, fix the homes and rent with little trouble assuming folks get along. AND as long as individual power and water meters. 99.9% chance this is all illegal and only one power meter and one water meter which makes it difficult to rent to 3 different tenants. How do you split up the utilities? All works ok when all family.
I avoid such messes!
the fix is to remove the mobile homes and fix the house. It'll cost between $5k and $10k to remove each mobile home. Google mobile home domolision. Most areas have folks who do this.