The 2024 battleground states are expected to be Pennsylvania, Michigan, Wisconsin, Arizona, Georgia, and Nevada. Here are the states which will have the third party candidates and RFK, Jr. on their state's ballots.
R.F. Kennedy, Jr: AZ, GA, MI, NV, PA
Green: AZ, MI, PA, WI
Libertarian: AZ, GA, MI, NV, PA, WI
No Labels: AZ, NV, PA
Cornel West does not have ballot access on any of the swing states. In 2020 the Libertarian Party garnered 1.2% of the popular vote, while the Greens collected .3%. So far, No Labels hasn't found a willing candidate for president.
The complete ballot access by the minor candidates are in a table at the link below. Let me know if I missed getting a candidate or party and the state right. I didn't bother with the non-swing states as these "other" candidates won't be spoilers in the red or blue states.