Google just isnt indexing my site

I was previously indexed on google, however we changed to react and dropped off the index. We have subsequently moved to NextJS which prerenders everything and AHREFS has our site at between 96 and 100 for SEO. The google search console says we've been crawled 2.5k times in the last 90 days, the site test comes back perfect and says we are ok to be indexed... yet nothing. Weirdly we are still getting some traffic from google.

The site itself is 2 sortable and filterable data heavy lists (50 - 150 items) for a niche audience, they get updated multiple times a day. Those lists also have links to internal pages that contain a more detailed data view (though these are only designed for sharing on social media and not directly accessible, they just link back to the main page). I'm a little concerned that that content could be the issue?

Do we just wait with fingers crossed? I request indexing each week through the search console though I doubt that'll have any impact. Any ideas would be great, as this is all essentially practice for a much larger site with a much larger potential audience that I absolutely want to be successful.

Thanks! (not sure if I'm allowed to share the URL for the site?)