Oink's Pink Palace. Yes it was a torrent tracker so arguably illegal, but the breadth and depth of music it cataloged (not to speak of the community) is still unmatched.
Or you can just ask. I emailed asking for a refund, citing corona, the (pre-paid, non-refundable) hotel I was going to stay at for SXSW and they refunded me the entire sum. Very impressed, and I'm sure preferable to credit card charge backs.
Perhaps the cheat sheet in itself is useful for you, but mostly I'd recommend the process of assembling information in a concise way as a good way to learn.