I just found something slightly bizarre in the Oasis entry on the respected Allmusic site. (Scroll down a little until you get to the list headed "Performed songs by".)
If we can assume that there's some logic behind the ordering of the list, my own authorial contribution to the Reality Show Rutles would appear to be less significant than that of Noel Gallagher or Lennon-McCartney (fair enough) but bigger than that of Gary Glitter or Slade. Or, indeed, Liam.
(There is a mundane explanation for this, and no, it doesn't mean that I have massive royalty cheques rolling in every quarter. Such is life.)