Lots of transactions need insurance and re-insurance, AML and other types of processing costs in the financial system. List of things that can benefit by replacement with NFTs..
Once county records are converted, there is literally no need for title insurance which regularly adds thousands of dollars to real estate transactions.
Real Estate Deeds
Base lack of transparency in data resulting in the title "insurance" market.
"Original Work" Insurance
Enough has been said in this area - same use case, multiple applications.
Co-ordination of benefits
Not really NFTs - maybe generically on-chain solutions for this issue when dealing with multiple independent entities. Also - subrogration in the insurance field.