Public records give no indication of type of loan. Probably the best indicator of potential distress is how much they financed. If the did not put money down there is no cusion if the have to sell. You can check zillow.com for that.
I take it you are watching your neighborhood for potential value drops due to distressed homeowners. If that is the case check all the homes for sale, see if the financed 100% in the past 3 years. If they did there could be problems.