Pattern family
Twills
Twill-derived patterns are built from the diagonal. Because a twill weave steps its interlacings sideways each row, changing the color order of the threads or the direction of the diagonal produces houndstooth teeth, herringbone Vs, and pointed chevrons. These patterns are woven structure, not surface print, which is why they dominate suiting.

Houndstooth
No. 013pattern · twills

Herringbone
No. 014pattern · twills

Chevron
No. 015pattern · twills

Denim
No. 023fabric · twills

Tweed
No. 024fabric · twills

Flannel
No. 025fabric · twills

Gabardine
No. 032fabric · twills

Sharkskin
No. 042fabric · twills

Serge
No. 045fabric · twills

Chino
No. 050fabric · twills

Drill
No. 051fabric · twills

Harris Tweed
No. 063fabric · twills

Loden
No. 076fabric · twills

Worsted
No. 090fabric · twills

Barathea
No. 098fabric · twills

Whipcord
No. 099fabric · twills

Donegal Tweed
No. 103fabric · twills

Cashmere
No. 109fabric · twills

Mohair
No. 110fabric · twills

Merino
No. 112fabric · twills

Alpaca
No. 113fabric · twills

Camel Hair
No. 114fabric · twills

Vicuña
No. 116fabric · twills

Melton
No. 117fabric · twills

Duffel
No. 118fabric · twills

Kersey
No. 136fabric · twills

Frieze
No. 137fabric · twills

Coutil
No. 169fabric · twills

Camlet
No. 170fabric · twills
Settle the confusions
From the journal
Costume makers hunt cloths that no longer sell under their old names. Samite, coutil, fustian, melton: what each was, and what to use instead today.
Plain, Twill, Satin: The Three Weaves Everything Is Made From →Almost every woven cloth is one of three interlacings. The only difference is how often the warp and weft cross. Here is the whole grammar of weaving.
The Geography of Cloth Names →A surprising number of fabric names are just place names. Denim, jeans, calico, muslin, duffel: the catalogue of cloth is also a map of medieval trade.
Why Denim Fades (and Why We Pay Extra for It) →Denim's fade is engineering, not accident: ring-dyed yarn, exposed twill floats, and an indigo that never fully bonds. The flaws are the product.
How Houndstooth Is Actually Woven →Houndstooth is not a printed motif. The jagged tooth emerges from a 2/2 twill and a simple color order. Here is the construction, step by step.