Ancient Civilization:
Plato
Aristotle
Seneca
Marcus Aurelius

Perenialists:
René Guénon
Frithjof Schuon
Titus Burckhardt
Wolfgang Smith

Distributism:
G. K. Chesterton
Hilaire Belloc

Elitism:
Gaetano Mosca
Vilfredo Pareto
Robert Michels

Misc from 18th to 19th century:
Juan Donoso Cortés
Joseph de Maistre
Klemmens von Metternich
Edmund Burke
J. G. Hamann
Hegel
Thomas Carlyle

Third Positionists:
Julius Evola
Nicolás Gómez Dávila
Werner Sombart
Robert Filmer
Alasdair MacIntyre
Giovanni Gentile
Alain de Benoist
Francis Parker Yockey
Anthony Ludovici
Leo Strauss
Carl Schmitt
Mario Palmieri (The Philosophy of Fascism)
Alfredo Rocco
José António Primo de Rivera
Sergio Panunzio
Michel Aflaq
Ramiro Ledesma Ramos
Giuseppi Bottai
Muammar Gaddafi (the green book)
Ugo Spirito
Antoun Saadeh
Raven Thompson
Onesimo Redondo
Georges Valois
Gottfried Feder
Gamal Abdel Nasser
Gregor Strasser
Otto Strasser
Plinio Salgado
Jean François Thiriart
Adriano Romualdi
Corrado Gini
Giorgio Locchi
Enzo Erra
Giorgio Pisanó
Franco Freda
Georges Sorel
Giovanni Papini
Ernst Niekisch
Agostino Lanzillo
Enrico Corradini
Gabriele D'Annunzio

Misc.:
Mircea Eliade
Jacques Ellul
Martin Heidegger
Ivan Ilyin
Roger Scruton
Joris Huysman
Jean Braudrillard
Charles Maurras
Shang Yang
Shen Buhai