So now I'm wondering: what even is the strongest way?
Currently, I'm using KeePassXC to generate all my passwords - and I always try to have as many characters as possible with special and uppercase characters, but my laptop and password database decryption keys are generated using EFF's Dice[3].
[1]: https://www.bleepingcomputer.com/news/security/the-top-5-things-the-2022-weak-password-report-means-for-it-security/
[2]: https://xkcd.com/936/
[3]: https://www.eff.org/dice