Ways Bitcoin can be lost
1. Forgotting the encrypted password used
2. Seed phrase accessed by attackers
3. Malware attack like trojan and keyloggers etc
4. Through phishing sites
5. Through fake exchanges
6. Through fake wallets.
7. Through lost passphrase
8. Hacked exchanges
9. Lost to cloud mining sites
10. Lost to Ponzi scheme
11. Lost through fake giveaways and airdrops
12. Lost through misplaced seed phrase, private key or seed etc.
The ways of losing BTC that I marked in bold are different from what the topic (and the rest of your list) is about, I believe. Losing BTC to scammers means that you don't have this money anymore, but it's not gone from the circulating supply. When you lose your seed phrase, on the other hand, nobody can get or use your coins, so they're truly lost for everyone. The latter has more implications because it's what makes Bitcoin even more scarce than it was supposed to be (due to a large percentage of inaccessible coins which are as good as nonexistent).