I know our raiding time isn’t exactly what you’re looking for but the trade off is that instead of having to commit 6-9 hours a week across 2-3 days you’re only committing 1 day to raiding. Does mean that you’d need to give that extra hour on the Thursday.
If you’re up for considering the 1-day a week (Thursday) but for 1 hour extra, I believe we meet the rest of what you are looking for. Happy to chat.
Alternatively we do run an alt HC raid on Tuesdays with no time requirement so you could leave whenever.