I'm not sure what the list is but you can probably get it from the ed depot.
However, you can make your own. It's really easy.
Open up microsoft paint, go to image, attributes and set the pixel axis to 256 x 256. then put whatever you want in there and save it as a jpeg.
Put the new jpeg in your mission folder and put
this setflagtexture "mynewsuperlookingwickedlydesignedflag.jpg"
in the init line of the flag on your map.
I made loads of san-francisco 49ers flags.
:wow: