So, I don't know which is more famous, but I do know that there's footage of Armstrong. The page
https://www.nasa.gov/multimedia/hd/apollo11_hdpage.html links to a side-by-side
https://www.nasa.gov/sites/default/files/files/One_Small_Ste... and that shows Armstrong's initial descent, ending with the "One small step" line.
Furthermore, from https://en.wikipedia.org/wiki/Apollo_11 we can read:
> Climbing down the nine-rung ladder, Armstrong pulled a D-ring to deploy the modular equipment stowage assembly (MESA) folded against Eagle's side and activate the TV camera.[120][8]
> Apollo 11 used slow-scan television (TV) incompatible with broadcast TV, so it was displayed on a special monitor and a conventional TV camera viewed this monitor, significantly reducing the quality of the picture.[121] The signal was received at Goldstone in the United States, but with better fidelity by Honeysuckle Creek Tracking Station near Canberra in Australia. Minutes later the feed was switched to the more sensitive Parkes radio telescope in Australia.[122] Despite some technical and weather difficulties, ghostly black and white images of the first lunar EVA were received and broadcast to at least 600 million people on Earth.[122] Copies of this video in broadcast format were saved and are widely available, but recordings of the original slow scan source transmission from the lunar surface were likely destroyed during routine magnetic tape re-use at NASA.[121]
Why do you think it's Aldrin's descent which is more famous?