I tried English and Italian and I was a bit surprised... my son’s name which is Leo and valid in both languages wasn’t there... while there were at least dozens of names so archaic most people would never hear them in reality! Not sure where you got your sources
I just goaded my Italian partner with a link to the page containing our toddler's name - we agreed on the name itself, which is known in both countries, but not the exact spelling.
I was pleased this page preferred my interpretation, so as an asshole Scot, I was quick to share it.