Having had 2 Sdg bell air , 2 Fabric Scoop and 2 Brooks Cambium over the last 18 months all comfortable but a few rides in all creak 🥴 At 92kg and ride two full sus bikes ( only one at a time) I just want a quiet saddle , any suggestions appreciated .
Sure it’s the saddle creaking? Could be seatpost creaking in the collar/tube. I don’t think I’ve ever had a creaky saddle, but I’m not as heavy as you.
I think all plastic moulded saddles tend to creak once you ride them in muddy conditions. It's just a matter of when.
Out of interest, have you tried a different seatpost? Maybe the creak is coming from the clamp.
All creak on other bikes ( friends) and I’ve tried with other posts
Have you tried lubing them?
Couple of little drops of oil into the sockets that the rails go in to when the bike is upside down normally sorts it out.