“Richard” has been and remains in steady decline from 1940. The graph shows the rate of decrease in naming babies Richard actually got less steep around the time of Nixon’s election, though not by much and I’m hardly implying causation. But certainly there’s not even a visible blip in slope in either direction ca. 1974.
My mother, who was born in the 40s in Baltimore, grew up with three friends named Andi, plus a Wendi, a Loni, and a Lani (pronounced the same as Loni). And when my grandmother was young and hip (that is to say, before my mother and all her friends were born), she went by “Etti” (short for “Ethel”). So the “i”-name thing wasn’t purely a 70s thing.
But for all I know that was just a local phenomenon. According to that Name Explorer link, “Loni” is the only one of those names that was ever in the top 1000.
Oddly, none of those are variants of “ie” names. (Well, there are a few Andies and Lanies, but not many, and I’ve never met a Wendie or Lonie.)
I think what Dick Nixon ruined was the nickname “Dick” more than the name “Richard” itself. Just sort of helped the name & nickname not recover. The decline of both is probably also connected to the use of “dick” for “prick” to the point that “dick” is the more common word in the US now & has evolved its own associated meanings.
And I’m about the same age as Nzinga & agree that Tyrone is pronounced “tie-RONE.”
And my uncle Jon apparently went by Joni in the 1960’s. Pronounced like “Johnny” not “Joanie.”
After Col. Nasser turned military defeat in the 1956 Suez Crisis to political victory his prestige in the Arab world soared and many people named their children after Nasser. The name can still be found on young people today.