Always enjoyed Badfinger as kind of a compilation band of various songs I really like from different albums. I never really got into any of their proper albums in full too much. I do like how they named one of their albums "ASS" though.
Fountains Of Wayne was always a favorite of mine for years. It's a shame one of the 2 main guys died of COVID last year. I love all their albums but the first 2 or 3 are better than the rest. The 3rd one is a bit overlong but still really good, and has that song that most people only know from them, which made them seem like a one hit wonder. My favorite remains their s/t debut though and it should be known as a classic of 90s power pop besides possibly their 2nd album
You've heard "Third/Sister Lovers" by Big Star right? Obviously not power pop but a great album all the same.
Flamin Groovies' are one of those bands that have been coming to mind because Babblers used to praise that band and their albums a lot 20 years ago but I never hear about them anymore. There are some other bands like that too that I am eager to check out if I don't forget about it (including The Shoes and a few other bands on your list)
A few of those bands I love exactly 1 song from (Smithereens, Raspberries, etc) and haven't heard anything else. Love The Db's and they are a band I've been into most recently as far as power pop goes.