[16.5.6] Merged bank accounts into cash accounts tabs

The introduction picture of this topic shows a type column that I don’t see after updating to 16.5.32. Has this been removed now ? EDIT : Already been explained here [16.5.32] Added ability to create custom control accounts for cash accounts - #15 by Tut

A consideration could also be to show the custom control account as a column since this can span over multiple accounts ? (since 16.5.32)

We can add a custom field like Account Number to Cash Accounts, but can we also add that field to custom sales invoice template using something like:
{{ cash_account['<Account Name>'].custom_fields['<Account Number>'] }} or
{{ cash_account.custom_fields['<Account Name>.<Account Number>'] }}

Thanks.