Game/Anime Soundtrack and use of Leitmotifs/Remixes

I'm curious, does anyone else really enjoy listening out for the in-game OST's remixes and usage of leitmotifs from the different theme songs?

Off the top of my head, there have been multiple remixes of Make Debut, Girls Legend U, Yume wo Kakeru (Run for Our Dream), and Umapyoi Densetsu (Umapyoi Legend), and then each Main Story chapter gets OST remixes of their final song like Hajimari no Signal (Signal of Something New) or Sasayaka no Inori (A Little Prayer).

It's really cool to hear a familiar theme but with a very different feel or mood, or even a completely different musical style. Some of those that really stand out for me are Ikusei Kyokachu (Leveling Up; cheerful, major key version of Umapyoi Densetsu), Shinjite Sasae Tzukeru Koto (Always There; emotional, moving version of Girls Legend U; the strings and the chimes in this piece always make me feel things) or Yubikiri Genman (Pinky Promise; quiet, emotional version of Yume Wo Kakeru)

The pure remixes of the themes are so good as well, like Kitto Hajimaru Story (The Story Will Begin; orchestral remix of Make Debut) or Kimi to Yume wo Kakeru yo (We're Gonna Run for Our Dream; orchestral remix of Yume Wo Kakeru)

Does anyone have any particular OST tracks in this vein they'd like to share? If people would like to talk about the music of the anime as well, feel free! I know RTTT uses remixes of Glorious Moment (example 1, example 2, example 3, example 4) and Ichibanboshi ga Kakeru Sora a lot as well (example).