I work in maternity. A lot of the ‘really old’ names people are mentioning on this thread (Enid, Gertrude, Elsie, Mavis, Derek, Fred, Arthur etc) are all extremely popular.
Even some of the names from more like the 50s and 60s (Valarie, Margaret, Christine, Alan, Frank, Robert) are either still popular or making a comeback. Not all though, haven’t seen a Carol or a Linda for example.
It’s more the really popular names from the 70s, 80s and early 90s that you just don’t hear any more eg Donna, Sharon, Tracey, Debbie, Rachel, Samantha, Gemma. Lee, Nicholas, Anthony, Richard, Craig. Not seen any of those in a while shy of maybe middle names.