The different De Buyer Carbon steel lines confuse me - can you help?

I’ve now written to De Buyer two times via their website in my broken English.

No reply yet and I wrote my first question weeks ago.

I’m looking to get the thickest possible De Buyer Carbon steel frying pans.

Currently I own 4 De Buyer Mineral B Pro frying pans, 2 x 24 cm & 2 x 28 cm.
I’ve measured them and the 24 cm pans are 3.2 mm thick & the 28 cm pans are 3.4 mm thick.

I’ve heard about a model called ‘Au Carbon’ but I find ZERO about this model, when I google it and no mention of this model on the De Buyer website.

Then there’s the model called Carbon Plus.

Supposedly this is a cheaper version of the model I own, Mineral B. Carbon plus comes without the beeswax coating and in a slightly more rough design. But I can’t seem to find any information on the difference between Carbon Plus & Mineral B regarding the thickness of the pans.

Can anyone here shed some light on the difference between the De Buyer Carbon steel models?

Cheers, Claus