Kindly add group by visibility in not only board view but also table view and list view.
Can you elaborate what you mean. There is a grouping option in both table view and list view.
I meant: currently the grouping in table view seems like an incomplete feature.
Unable to know the count of records inside a group at a glance. In board view, we can display a formula field showing count of the grouped value. But no such way to display in table view.
Also in table view, unable to select all the records inside a group in a single click. Because selecting the group record, selects the grouped value, and not the underlying records. No way to select the underlying records except one by one, which is not feasible.