What about some sort of track lighting system where the fixture stays within the kitchen ceiling but some light can be directed towards the end of the island?

Yes. It’s what I’m looking for but can’t find anything that would work. I need like a off center pendant

IMO there's a lot visually going on in a small space. Have you considered simply changing the wattage of the bulbs in your ceiling downlights? To me that is the least espensive, easiest solution to gain more lighting.

Select a PAR LED bulb for your downlights.

That’s not going to help as I have about 30” of island going past the ceiling. Here is a better picture

Get a fixture like this and get an extra long wire to support it all the way up to second floor ceiling.