Not a complete list, but some Emacs equivalents:

  M-^ delete-indentation (or join-line)
  C-x C-t transpose-lines
  kill-line
  M-0 C-k kill to beginning of line
  djcb-duplicate-line (not built-in)
  M-q fill-paragraph
  C-c c comment-uncomment
  M-c capitalize-word...
  org-move-line-up
  C-u M-| sort