Floating Clouds is featured on the latest Tomita Lab single.
Not
technically a Jihen member, but Cat Man was seen orchestrating for Suiyoubi no Campanella recently.
https://www.bilibili.com/video/av25422484/
Again, not technically a member, but Uni Inoue produced the last Kinoko Teikoku album. This happened two years ago, but I know there are some Kinoko fans here.