Every song ever?

I am sick and tired of streaming services and am looking to become independent in my music consumption. Since I ONLY LISTEN TO THE MOUNTAIN GOATS, this led to wanting to collect every single song ever in a digital format, a daunting task. From studio albums to unreleased singles to bootlegs to compilations to demos etc etc, I want it all. I imagine some of you have also had this goal. Does anyone believe they succeeded? Does anyone have anything that helped them along the way? I'm thinking something along the lines of an all encompassing spreadsheet of song titles and albums that I could cross off as I download things. I tried briefly to get AI to make me one, but it sucks at anything that wasn't studio released.

My personal disclaimer for anyone that this notion may offend: I own and have paid for almost every drop of the music the band would make any money off of sometimes in multiple formats, go to many shows every year, am a tMG merch addict, and have all JD's books... so I don't really feel too bad about collecting something that isn't even available in any meaningful way that the band sees revenue from. They have seen and will continue to see oodles of my moolah.

Curious to hear people's experiences with this and if you have anything like a spreadsheet to share...