Audacious with winamp skins, weening off windows’ foobar2000 as an old favorite, jellyamp, amberol occasionally

Love the look of this, would love to be able to use this on my current phone

Armcord is good and uses Vencord as well for plugins/theming. Webcord is another option that is primarily privacy-focused

There is a KDE flavor in development for vanilla but its not publicly available yet

Are you just looking for a partition editing tool? Rescuezilla ships with gparted and some other backup/rescue tools and boots from live usb though gnome disks isnt included if i remember. Gparted distributes its own live boot utility. You could also look into making a persistent live installation of ubuntu or other distro and have those installed and theyll remain on the disk.

Edit: Rescuezilla comes with gnome Disks so this may be what youre looking for

As usual its just another shell on wheels. Nothing revolutionary here, just seems like another art project.