Check out the book “Compassionate Satanism” by Lilith Starr. You can buy it on TST’s website, I am not sure about availability on other platforms.
Romantic Satanism holds up the depiction of Satan from Romantic period literature as an ideal. The book has a nice analysis of Satan’s use at that point as a rebel against authoritarianism who fought for Enlightenment. Romantic Satanists are non theistic and do not believe in the supernatural. TST is an organization of Romantic Satanists but you don’t have to be a TST member to be one; the seven tenets of TST are a major guiding force as well.
Totally suggest reading the book - it’s fascinating and well written.