Restore backup list groupings

Should there be a “Last Month” or “Even Older” grouping beyond “This Month”?
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Or if “Month” is defined as X number of days, not calendar month (which I guess would put it in line with “This week” being the last 7 days) perhaps the labels should instead be “Last 7 days” and “Last 30 days” to clarify these are rolling rather than fixed calendar time periods.

Maybe there is a “hole” there. The “this month” is “this month - 1” and “last month” is “this month - 2”, so perhaps they show up in “this month” until they are 2 months old. But it is counting calendar months, not 30 days.

Everything older should show grouped by year.

That makes sense, thanks!