I ended up getting a pane of the Katherine Graham stamps and Nancy Regan. For the Regan stamp it is simply the portrait chosen, she looks so ghostly and therefore makes the stamp a rather ironic portrait of a President's wife. I recommend getting one for your album and another for Halloween --- that' how ghostly Nancy looks!
I concur that the Women's Rowing and Might Mississippi are well-designed stamps and the Might Mississippi has a good map and explanation of the sites pictured along the Mississippi on the back of the pane.
FOr the Pony Cars, the artwork looks attractive but the subject doesn't interest me and since I decided to get all 6 variants of the 2022 Flag stamps and a pane of 4 of the Priority Mail and Priority Mail Express stamps along with some cheaper items, I need to hold off for a few months on US stamps. Plus there seems to always be one or two nicely designed stamps that appear in the Fall or a definitive of some interest. Already the USPS os reselling the old Bobcat 1 cent stamps but only in rolls of 3,000. I MIGHT get a roll of the Bobcat stamps and sell the extra on eBay
but still afraid I will have a glut of 1 cent stamps to use only infrequently (or start plastering them as part of first class and postcard mail!)