I have skimmed through the first link.
Rene Guenon [France 1886-1951] was a confused 'mass of protoplasm'. Originally a Christian, he denounced Christianity and leaned towards other religions; Islam, Buddhism, Hinduism and even Taoism.
He called himself a SUFI but that was a misnomer since Sufism is often [wrongly] associated with Islam.
Rene was in fact a mystical pantheist where everything in the universe is God. ['wahdat-al-wujood' = Unity of Being] This proposition has nothing to do with Islam.
Therefore, I would rather use the English term MYSTICISM in the west instead of Sufism.
René-Jean-Marie-Joseph Guénon (French: [ʁəne ʒan maʁi ʒozɛf ɡenɔ̃]; 15 November 1886 – 7 January 1951), also known as ʿAbd al-Wāḥid Yaḥyá (Arabic: عبد الواحد يحيى) after his conversion to Islam, was a French author and intellectual who remains an influential figure in the domain of metaphysics, having written on topics ranging from sacred science and traditional studies, to symbolism and initiation.
He mainly wrote and published in French, and his works have been translated into more than twenty languages. Later on he perfected his Arabic and from 1931 onwards wrote articles in that language for the journal Al Marifah, while outside French and Arabic he had command over Latin, Greek, Hebrew, English, German, Italian, Spanish, Russian and Polish, able to talk with native speakers in these tongues. He is considered to be an important writer in the Traditionalist School of philosophy. Guénon's philosophy had a "charismatic impact" on Traditionalist authors.