I've not caught everything yet by a long chalk!
The reference books I am using are:
Noticia de las Órdens de Caballería de España, Cruces et Medallas de Dístinction, Madrid 1815.
Dueñas. J.V. (1843) Coleccion de cruces y medallas de distincion de España. Madrid, Yenes.
Gillingham, H.E. (1926) Spanish Orders of Chivalry and Decorations of Honour Numismatic Notes and Monographs #31. New York, American Numismatic Society.
The first 2 I found in Google books, the third is on the American Numismatic Society's website.
I've also been using the relevant chapter from Barac, B. (2016) Reference Catalogue Orders, Medals and Decorations of the World: Part 1V Gold Book (P-Z). OBOL, Zagreb.
So now I have to find the book you've referenced, Antonio! As you can see, my Spanish is getting a good work-out.
As well as the website, I am compiling everything in a document which I'll share as a PDF someday... It's all made for an excellent Christmas break!
(and Google books works its magic again!)