I would start with measuring saddle width. Too wide would cause chafing and limit movement, too narrow gets you into ass hatchet territory. Which one does it sound like you have? Flatter wings or downward sloping wings (the wider area at the back of the saddle) can impact perception of width, as well.

It already sounds like you’ve determined that there’s too much padding on your current saddle.

If you’re sitting more upright, maybe a flatter saddle; if you’re in the drops, maybe a slightly more ‘wave’ shaped saddle when viewed from the side.

I have three saddles on four bikes, all are within a few mm of 145mm wide (my sweet spot). Two of the saddles have a fairly high amount of cushion for a road saddle (Selle Italia Onda and Prologo Kappa Space), but not super fluffy or heavy. The Ondas have a slight dip/soft spot in the middle, good for rolling the hips forward to get into the drops, the Prologo doesn’t, but I’ve set the angle such that it’s not really a problem. The third saddle is a Selle Italia Flite. This is the firmest, flattest saddle that feels least comfortable when initially getting on the bike, but isn’t too bad after a dozen or so miles. I would consider replacing the Prologo with one if it dies (occasional creaking from the saddle makes me think the shell has come loose from one of the rails).

If you’re not caring much about weight, I’d suggest splurging on a Brooks saddle, as they have a reputation for being both comfortable and lasting forever. Otherwise, try answering the top three questions and go from there. Btw, eBay is your friend when it comes to bike saddles - a lot of options, new and lightly used from ppl who didn’t like what their bike came with.