It was AUR packages from yay. I’m a CS major into gaming and emulation so there are a decent amount of programming build tools from the aur that I had, it looks like most of it is coming from storing all of the binaries from AUR packages, as intelliJ ultimate takes up 50 GiB, proton-ge-custom takes up 31 GiB, and Yuzu emulator takes up 16 GiB.