Girls whose FH/DH are walking down the aisle with his parents

Ok ladies, I need some help. My FMIL is requesting FH walk down the aisle with her and FFIL. My mother and brother may or may not be coming, but if they do, they'll walk down the aisle together. I then have 2 BMs and GM and my MOH and BM, and my FG/RB who will walk together. How do I organize the procession? Did you have FH enter with his parents before or after all of the BMs/GM?

Here's what I was thinking. Please let me know if you have ANY other suggestions.

Brides Mother/Brother
Groom with FILs
BM/GM1
BM/GM2
MOH/BM
FG/RB
Meeeeee and my Daddyyyyy

If the groom is walking in with his mom (or parents), they walk first - the groom should be the first to get to the altar.

If FH will be at the altar, but his mom is walking down the aisle, then groom's mom/parents walk first, then bride's mom/parents, then BP, then ringbearer and flowergirl, then bride.

HTH! You can, of course, do it however you like, but this seems to be the 'norm'.

For our wedding this is how we did it.
Groomsmen walk down aisle one by one
best man escorted MOB and Grandmother of Bride
Groom with his parents
bridesmaids one at a time
MOH
Bride with Father