I have looked at insurance and would like to take some out (despite my protestations from another thread a couple of years ago) but they do not make stuff easy.
I can only actually prove what I paid for two of my items, a recent D850 and a less recent Sigma 14-24mm, but on top of that I have a 105mm Micro, a 50mm f1.4 and a 80-400mm for which I have no receipts and can't even remember the year I bought them. In the event of a claim, I couldn't prove anything about the latter items so I'm thinking that an insurance company would quite happily take my money then make me jump through hoops before eventually declining a payout. I know the older lenses aren't worth that much but they would cost a lot to replace.
Perhaps the best option would be to take out cover for the things where I could prove the provenance and just hope for the best with the other stuff.
I looked at Ripe Insurance and while their premiums are reasonable, Trust Pilot has several reviews referring to their claims handling company Davies Group who seem less than friendly in their approach. Like all things insurance, you can't know anything until you actually have to make a claim and one can only go by reviews of others who have made claims.
I think I'll just go to someone like Hiscox and insure only those things where I have provenance and I might stand a chance of getting what I paid for in the event of a misfortune.