Life insurance, of course - though we’re gradually reducing that due to reduced need.
Long-term care: We’re in the same position as many: too many assets to qualify for Medicaid nursing home care, too little to self-fund such care.
Umbrella policy: got that when my son started driving. It’s not terribly expensive. Though it did require us to up the liability on our regular auto (or home?) policy a bit.
We generally don’t bother with trip insurance though if we have a big trip planned I might go for it (I think I sprung for it for one train trip - which we actually nearly did have to cancel due to illness).
And yeah, extended warranties on some appliances. Anymore, they are so complex due to the electronics, which cost almost as much to repair as to replace the entire appliance - that it seems worth it. The stores wouldn’t push them if they weren’t generally profitable, but they have paid off several times.
We have paid for title insurance for ourselves (weirdly, with the latest refinance, I don’t think the lender required one for their part!). The owner’s policy was a one-time thing when we bought the house - never had to repurchase it with all the refinancing.