Add "All Items" to groups

Would it be possible to add an entry for “All Items” above the groups? This would mimic the iOS and iPadOS layout. Like those versions, the All Items would contain every item from every group plus any ungrouped entries. I know that search can help me find items whose group assignment I've forgotten, but sometimes it's easier to scroll through all the entries and find what I need. I use that capability often in the mobile apps.