Debts

If you are out of the U.S. it greatly complicates their efforts to collection. It CAN happen but it's rare, especially for smaller amounts like you're talking about here.

Creditors CAN get default judgments, perhaps they have done so. A Lexis/Nexis search on your own ID information can be had for about $9 to find that out.

Arrest would only happen if you had failed to answer post-judgment discovery in a situation where it was clear to the court that you had been served with it and were failing to answer it contemptuously.

If you want to pay you will need to get copies of your own reports from the big 3 credit reporting agencies (TransUnion, Equifax and Experian) and try to determine who owns the accounts in question (many times they have been sold to Junk Debt Buyers and the process of determining who owns what versus who is merely collecting for the original creditor can get a bit involved). Then you can engage with owners of the debts in question and offer settlements or payoffs over time.