simply not true with the exceptions of about 4 of them they are all recognized all valid by not only the Catholic Church but also the Eastern Orthodox and Oriental Orthodox Churches in fact most liturgical protestant churches(Anglicans and Lutherans) commemorate the names I listed as well as every single one I listed lived before the 16th century
Well, I am quite sure that if you go to streets and ask people if they heard of Calvin or Luther and then if they heard of Gregory of Nazianzus, the result will not be good for you.
Its possible that some official churches documents recognize some more names from the list, but we are probably talking about another kind of "being known" or "being important".