Based on a suggestion from support, I added a hook/block element to the top of my front page, which is showing the default dynamic posts list. That worked, in that I was able to add a block I needed but I can’t get the spacing right on the block.
If I set the bottom padding of the container to 0, the blank space at the bottom of the container is too small. But if I set the bottom padding to 1, the space is too large. The “1” can’t be referring to pixels in this case because it’s way more than one pixel, so I’m not sure what’s going on or what I’m doing wrong. See link to screenshots in Private Information section for reference.