This is a good question, but I’m not sure if there’s a good answer.

One thing I liked about grad school is that there would literally be classes where students were assigned to read a foundational paper in the field and then discuss/write about it, so my personal go to has been to try and find “Intro to X” grad level courses and see their paper assignments (most professors tend to put most course material online).

It’s not something guaranteed to give you results but often I will stumble into interesting stuff I wouldn’t have otherwise.