Risus was good.
Towa's had a shitload of power,
Kanata's was a different flavor but still had a lot of power.
Watame's was fun with how she belted it out.
Polka's had a cute little laugh and a slight yan insert at the end
Suisei's was easily one of the best from Hololive with how she down pitched it to sound good with her deeper normal voice, also so she could add a fun little flourish at the end.
Renie's gets a honorable mention since she made it into a whole goddamn music video.
On the niji side of things that Bandaros or whatever
>>7144080 mentioned
That goddamn vid had some of the highest production value ive seen so far.