1Password SSH Agent - Multiple Vaults (non default)

A final update for anyone who ends up landing here:

• I went to see my brother who has an Intel iMac
• Set up an account on there and downloaded 1Password 7.2.5
• It actually launched
• Signed in
• Renamed the LastPass vault to Main and juggled stuff around
• Let it sync
• Went back to M1 MacBook Pro and set up 1Password 8 again
• Stuff synced
• The vaults are now named properly
• However... some of my passwords there's 3 copies of now 😐
• I'm now having to manually go through 100s of passwords and delete the duplicates one by one
• It's not a perfect ending but it's an ending

So for anyone else who lands here:
• Use an Intel chip mac
• Use 1Password 7.2.5 to change vault names
• Beware of duplicates