Yes, definitely been back for a long time.
When I was at university (2002-2006), a friend had a little sister (aged about 11, I think) called Edith and we were all really surprised by a child having such an 'old' name. 10 years later and it was totally normal.
I like some and dislike others. Many seem natural on small children to me now but some continue to scream 'old lady/man'.
Ones I struggle with are:
Alma, Audrey, Betty, Dora, Enid, Irene, Maggie, Nora, Nancy, Nellie, Nell, Olive, Pearl, Peggy, Winnie
Arthur, Bruce, Frank, Sidney, Stanley, Ted, Wilf, Walter
My favourite 'old' names are:
Daphne, Effie, Esme, Ivy, Iris, Jessie, Martha
Archie, Freddie, John
Some that, to my knowledge, have not made a comeback - most, in my mind, for good reason but it's interesting as to why some have and some haven't as everyone has different tastes. Maybe they are back and I just haven't noticed:
Agatha, Alma, Beryl, Bertha, Doris, Dorcas, Ethel, Fanny, Gertrude, Hilda, Joan, Jean, Kaye, Maud, Mildred, Norma, Prudence, Patsy, Queenie, Rita, Susan, Sukie, Thelma, Theresa, Ursula
Boris, Colin, Douglas, Horace, Harold, Hubert, Kenneth, Nigel, Paddy
There also seem to be far more 'old lady' names than 'old man' ones. I know there are more female than male names overall but wonder if there are more 'timeless' male names where the fashion for them has not changed - Adam, Benjamin, Charles, David, Edward, George, Henry, James, Joseph, Luke, Matthew, Samuel, Thomas and William (and their variants) seem to cover a very large proportion of both boys and men as far as I've experienced.