There are at least three artists that have performed under the name 'YUMI':
1) Yumi is an American gaming YouTuber primarily known for his content revolved around the shooter game Tom Clancy's Rainbox Six Siege. He is a former member of The Group. He was featured on various releases with Softwilly before releasing his debut album LOST on July 21, 2023.
2) Yumi is a screamo band from Singapore. Check it out.
3) Olivia Yumi Nootenboom, better known by he stage name YUMI NU, is Officially signed to Wilhelmina Curve at age 14. Read more on Last.fm