I believe the "ayes have it" if we all waited to vote...Great topic David!!!...

I can start with perhaps some "category breakdown" suggestions...

Within the two primary categories I would suggest:

Thermal Mass Systems (aka "flywheel effect") measured in U Values

Loft Systems (aka trapped "dry" air) measured in R Values

Combination Systems.

Within the above we have the following:

Modern and/or Heavily industrialized:

Spun Glass (virtually worthless in the big picture.)

Foams (Not something I recommend at all anymore except perhaps for roofs

Cellulose (This could be in both "natural/traditional" also, as it has been used for well over 500 years in several applications if not older...

Aircretes

Fibercretes

Mineral Wools (over 150 years old, very good and could be considered traditional because of the longevity of its application and "recycled" material elements...)

(??? I feel I am missing one or two ???)


Natural/Traditional:

Cobb (...and related infill systems of masonry, stone, nogging, chinking, etc...)

Bale Materials

Sawdust (cellulose)

Cotton

Wool

Mineral Wool

Stack Wood (aka "Kubbhus" and related infill systems)

Textiles (felts and related modalities)