In addition, here are ...- Transferring to the wrong network or address (though some wallet software can detect this and notify the sender before the button is hit)
You can't send Bitcoin to invalid address because
Bitcoin address has a checksum. By the architecture, Bitcoin already help the users to not send to wrong address since you can only send your coins to valid address (although it could be an address that you can't access.
In addition to your list, I will add "centralized exchange" as one of the reason why people lost their coins, when CEX bankrupt, people can't access their coins anymore.
- Seed phrases should never be memorized, nor written on a mobile device or computer. They can be written on paper or in a book that shouldn't be visible to external members and should be strongly protected.
Remember, ink can fade over time
https://bbs.boingboing.net/t/which-inks-fade-fastest/96814