This is the best I could piece together. If I got anything wrong or you think I should add any state, please let me know in the comments with an accompanying article. A light grey circle means it’s still open.
Edit: Found lots more info here, but only lists the case numbers for most of them. Has a great map on it: https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ Alaska - lawsuit filed by Castro and pending - https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Arizona- case dismissed https://www.nbcnews.com/politics/donald-trump/federal-judge-rejects-bid-keep-trump-ballot-arizona-rcna128239
⚪ California - a call to the secretary of state, but unlikely. Also, Castro withdrew challenge - https://www.msn.com/en-us/news/politics/secretary-of-state-downplays-call-for-removal-of-trump-from-california-ballot/ar-AA1lWNv6
✔️ Colorado - Trump ruled to be not on ballot - Won by Citizens for Responsibility and Ethics in Washington (CREW). Also, Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Connecticut - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Delaware - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Florida - dismissed & US supreme court refused to take it up- https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Idaho - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Kansas - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
⚪ Maine - not decided yet - https://www.nytimes.com/2023/12/22/us/maine-trump-ballot.html Also, Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Massachusetts - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
⚪ Michigan - may go to the state supreme court - brought by Free Speech for Free People - https://www.businessinsider.com/michigan-could-remove-trump-from-ballot-next-2023-12?op=1
⚪ Minnesota - state supreme court ruled the republican party can decide who they want on the primary ballot, but left the case open for another filing for the main ballot- brought by Free Speech for Free People, says they will bring more suits in the future- https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Montana - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
⚪ Nevada - Lawsuit filed by castro
⚪ New Mexico - pending Castro filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ New Jersey - pending Bellochio filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ New York - pending 2, Castro & Dewald filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
❌ North Carolina - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Oklahoma - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
⚪ Oregon - going to the state supreme court - Free Speech for Free People brought suit - https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Pennsylvania - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
❌ Rhode Island - dismissed - https://www.tampafp.com/federal-judge-in-rhode-island-tosses-trump-2024/
⚪ Texas - pending Castro filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
❌ Utah - Castro withdrew challenge https://www.npr.org/2023/12/21/1220769191/colorado-trump-candidacy-fourteenth-amendment-insurrection
⚪ Vermont - pending Castro filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ Virginia - filed by Roy L. Perry-Bey of Hampton https://www.wric.com/news/virginia-news/motion-filed-to-remove-trump-from-virginia-ballots/
⚪ West Virginia - pending Castro filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ Wisconsin - pending Castro filed suit https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker
⚪ Wyoming - pending Newcomb v Gray (?) https://www.lawfaremedia.org/current-projects/the-trump-trials/section-3-litigation-tracker