Hi @dwt - don’t worry about Apple - there are so many ‘docks’ out there for Linux and Windows that are meant to emulate the Apple dock.
You can configure the HiQDock launcher icons to be any .svg or .png image you want - you can even convert the .hvif icon to an .svg (see all the instructions over at this forum thread HiQDock ... New Dock coming soon - #163 by hey68you or PM me for any questions)
I like to use these “Uos” icons in addition to converting the .hvif icons to .svg: https://github.com/zayronxio/Uos-fulldistro-icons
There are many more icon sets over at KDE store that you can download as zipped files and put the icons into the HiQDockIcons folder - Full Icon Themes - KDE Store
Docks for Linux/Windows: