1a. Make the 8 on the break and scratch, you lose.
1b. Scratch on the break, you lose.
2. People miss hit the cue ball on the break and swipe the cue ball aside so it doesn't hit the rack, and expect to be able to try again.
3. The 8-ball can never be used in a combo or carom, even if not the first ball contacted.
4a. You can play your last ball and the eight and win on the same shot, as long as you call it.
4b. You can play your last ball and the eight and win on the same shot, as long as you call it and the last ball of your group falls before the 8.
5. On the break, if you make a stripe and a solid, you get the group of the ball that fell first.
6a. If you shoot a ball from your group and make the called shot it doesn't count if you also made a ball from the other players group.
6b. If you shoot a ball from your group and make the called shot it doesn't count if you also made a ball from the other players group and that ball fell before your ball.
7. If you make one of the other players balls, it's a foul (this one was from a person that played ball in hand rules)
i am 57 years old and have played in bars all over the southeast since i was 18.
in that time i have only encountered 2 rules on your list. those are #1 and #3 and i have no problem playing by either one of those rules.
as far as the rest on your list goes... well i kinda enjoy walking into a place and beating some one at their own game.