Aleta Ogord is a Ravager leader and a member of the original Guardians of the Galaxy team, while Ying Nan is the aunt of Shang-Chi and a master of martial arts and magic.

Source: https://gamerant.com/michelle-yeoh-multiple-marvel-roles-explained/

But during the sequels, it was quickly established that Kraglin wanted to join the Guardians of the Galaxy as a full-time job, and Stakar Ogord () looked like a better fit to be the face of the Ravagers.

Source: https://collider.com/gamora-guardians-of-the-galaxy-3-disney-plus-show/

Michelle Yeoh had a brief cameo as Aleta Ogord in Guardians of the Galaxy Vol. 2 ahead of her featured part in Shang-Chi and the Legend of the Ten Rings as Ying Nan.

Source: https://comicbook.com/marvel/news/guardians-of-the-galaxy-austin-freeman-loki-exclusive/