Truly, the SE was a great phone. It was not really "rolled in" to future phone models; it just ended.

I don't know your definition of "rolled in", but the actual successor to the SE is the e line (iPhone 16e, 17e, etc).

I agree that the SE was a great iPhone and a great form factor. I didn't have one, but my kid did. Whenever I had to do something on their SE, I found it so much more usable than my own whatever Pro phone of that time. It wasn't enough to get me to go to an SE, however.