Sombrero Calentano?

Years ago, I read, or heard, that the distinctive straw hats, the ones with the black band, worn by some older Mexican men, were emblematic of stature or membership in a group or community, and that the location or position of the black band of fabric, and the length of the trailing piece of that fabric could differentiate one group, or perhaps "rank", from another. A Google search came up with the name "Sombrero Calentano."

Was I dreaming?

No one knows anything about these hats?

The Calentano hat comes from a region in Mexico known as tierra caliente, or hot earth, made up of the states of Michoacán, Guanajuato, Guerrero and the State of Mexico. The hat has sides that are turned up and held tightly with a black ribbon. The Calentano hat style is said to have originated in Tlapehuala, Guerrero, (where natural palm is abundant) and is made from palm leaves.

The Calentano hat comes from a region in Mexico known as tierra caliente, or hot earth, made up of the states of Michoacán, Guanajuato, Guerrero and the State of Mexico. The hat has sides that are turned up and held tightly with a black ribbon. The Calentano hat style is said to have originated in Tlapehuala, Guerrero, (where natural palm is abundant) and is made from palm leaves.

Well, some have their sides turned up and held tightly with black ribbon, some do not.
https://www.google.com/search?client=ms-android-samsung-rvo1&sca_esv=f1854236ccd13803&q=sombrero+calentano&source=lnms&fbs=ABzOT_Bu...

So, no cultural significance?