Bitwarden has this, you can set your next-of-kin and they’ll be able to get access. (They have to wait like 2 weeks or so and I imagine all sorts of alarm bells will go off if they try this while you’re alive). Might be a premium only feature though idk.
I’ve got an external screen that connects with a USB-C-to-C cable to that thunderbolt port.
Finding a cable supporting that is harder though, it needs both Power Delivery(PD) as DisplayPort(DP), and most cables don’t support the bandwidth for DP.