I’d add:

• ghostscript - with some basic perl scripts, works great for pdf flattening/compressing, merging, splitting, adding bookmarks etc.
• poppler - pdfseparate, sometimes pdfunite
• zathura - pdf viewing
• feh - images
• sshfs - prefer it to rclone
• cheat
• emacs - org-mode, latex, dired/wdired, capture, eshell, vterm, tramp
• mc/midnight commander