Unpopular opinion, but I find
Adelaide sort of ugly. It’s sort of old ladyish, snobby, and the English pronunciation reminds me of lemonade. I like the pronunciation in European countries better: a-dell-a-dee, but even then it’s not good. I do like the names that come from it though.
Ada,
Heidi,
Aida,
Adelina and
Alice are all wonderful.