+3 Super Meat Boy
+2 Dustforce
+1 VVVVVV
+1 Cloudberry Kingdom
+1 The End is Nigh
Almost went for a Rayman-rep. Not all of my recommendations have the same tone as Celeste despite the similar difficulty levels...but being a fan of Celeste tells me you're also a fan of good controls and good soundtracks while you go fail awhile.
O P E R A T I O N O U S T :
Nominate SHEIK!
https://i.imgur.com/OpudFxm.jpg