Yeah, there's a small cult following that fully appreciates those issues, but they certainly deserve a larger audience.

The entire Kirby run was recently collected again in another Kirby JIMMY OLSEN trade paperback in April 2019.
As were his MISTER MIRACLE 1-18 run (Oct 2017).
And NEW GODS run (Sept 2018).
And soon FOREVER PEOPLE 1-11 run (originally July 2020, now moved to Nov 2020), in inexpensive trades.

And prior to that, all four series were collected in an expensive and rather disappointing FOURTH WORLD OMNIBUS hardover (Dec 2017).

The Kirby story in FOREVER PEOPLE issue 1 is also a great Superman story.
https://readcomiconline.to/Comic/Forever-People-1971/Issue-1?id=66504



(by the way, the 12comic.com site appears to be permanently down, so I replaced the previous links with ones from readcomiconline in my above posts. I hope some of you out there haven't read these stories before, and benefit from great reading at the links I took the time to provide here.)