I saw an old post from 1password 3 with feature requests for the functionality to have checking accounts appear as an autofill option. I'd like to vote for this in the current version as well. It's not often that I need to fill a checking, but it is handy to have it as an option if wanted.
1Password Version: 22.214.171.1242 (12)
Extension Version: 126.96.36.199
OS Version: Windows 10
Sync Type: Dropbox