Divide your cash across many accounts to keep it FDIC insured
This is a thing. Here's a service (no affiliation):
https://www.flourish.com/clients/cash
Scroll down to where it says "Keep your cash FDIC insured".
They will spread your funds across accounts and banks in order to stay within FDIC insured limits. You see a single virtual account. They handle the sausage making.
Brilliant.