Based on my experience in sub-prime lending, people who just filed bankruptcy are less risky.
It is interesting. But you can think like this: if people just files bankruptcy, they are kind want to rebuild their credit. By law, they cannot file bankruptcy again within a few years.
Sure, they are more risky for people with good credit. But compared to other sub-prime consumers, they are kind of "good".
I used to helped a client in sub-prime auto-lending. Actually, they like these people. To them, all of their customers will file bankruptcy, if they already did it, they are kind of "good".
Sure, if you can find people with good credit history, it will be better for you.