The Buzz on Maggie is a Disney Channel original animated series that premiered in 2005 and lasted one season. The show can be easily found online on YouTube and other sites, However those uploads are TV broadcast rips in 4:3 and 480p quality. The show was produced in widescreen format, but due to Disney Channel not having an HD feed at the time, the show aired in 4:3.
Clips of these 16:9 cuts can be found on this playlist:
https://m.youtube.com/playlist?list=PLd1wioNfPogLgUW2Q_MzcUu4Yy292kmt_
No full episodes in 16:9 can be found online and it’s very unlikely that the show will come to Disney+.
a clip of the show’s intro in widescreen can also be found here: https://youtu.be/1IQYu6nKBjA at 0:03