It is slightly off centered, but mirrors the oven on the back wall of the kitchen. This shot might be more helpful. I will attach links to the pendants I had in mind! Thank you for your help!

@megs1030 The Kichler pendant in the picture is 15.75" Height x 10.50" Width. Island is 94"x 41" and ceiling height is 9 ft. Table is 48 in. This set will be replaced as well (the idea is to get something with a combination of white and brushed nickel or stainless still but same size). @acm Those look great. The island pendants and the nook light fixture are only 8 ft apart (from center to center). I'm wondering if switching from what I have now - mini pendants, 7" x 4" - to something much bigger as these Kichler ones (mentioned above) won't look too busy when combined with the nook. They look great but I don't mind finding something smaller if that is what it takes to bring the perfect balance.

Unfortunately your original layout is more functional than the proposed. How about putting the table in the former kitchen space? Then I’d make a built in hutch in that area bumped into the powder room. Can you move the door to the sunroom to the mudroom? Then you can get some decent wall space in the former dining room for a new kitchen.

If the fixture isn't part of a collection such that you can buy different variations on a theme easily, I find it's best to at least stay with the same manufacturer so that the finishes match. "Gun metal" and "coffee ombre" are going to mean different things to different manufacturers and in fact may not exist with other makers. But if the fixtures are far enough away from each other that no one can really make a direct comparison you can get close but not match and no one will notice. I think @acm has provided you with some good options that are thinking outside the box a bit.