Here they quote the Igros Moshe
https://dinonline.org/2021/11/18/uses-for-chomesh-money/
That while Maaser money is only for the poor Chomesh money on the other hand can also go to Mitzvas other than feeding the poor.
I could not find an Igros Moshe online. I would like to know if the Gra also holds like that. I try to hold like the Gra whenever I can.
Thank you!