This one is probably very specific but Utada Hikaru has one that I love, where towards the end of certain songs she sings the chrous, and then keeps the same melody going multiple times but with different lyrics. It's like she extends the feeling and rhythm of the chorus but keeps it interesting by using different lyrics the whole time. Some examples: Goodbye Happiness, Making Love, About Me, LETTERS, Sakura DROPS.

Multiple lines of a song being one sentence, with the candence carrying it through the lines. Eg. Snowman by Sia.

Right now it's breakdowns in hyperpop songs that are a lil too dubstepy but don't overstay their welcome. Underscores is a great example

I can't think of any more examples, but bands that rework an old popular song and keep parts of the melody and make a new one. Both examples I know of are teen spirit/rape me by Nirvana.. and linoleum/linewleum by nofx and are both, imo, reflections of what gained them a larger following. Can you name some more?

I don't know how to describe it or have the music theory knowledge to understand why it's so satisfying, but the outro for Tank! (Cowboy Bebop opening song) is just so good and I can't explain it.

https://www.youtube.com/watch?v=UFFa0QoHWvE?t=194

I like short intros with only vocals like "Hush" from Stick to your Guns.