word on the street is that Asenath Mason stole everything from Thomas Karlsson
Don't now if she stole everything but let's say Mason and her friends of
BALG are generally quite capable in recycling ideas and printing them in overpriced edgy looking "grimoires" for goth schoolgirls.
Undoubtedly, Thomas Karlsson made the idea of a Draconian current accessible and established with
Dragon Rouge his own distinguishable branch. In the end, all ideas of a modern Draconian current trace back from Kenneth Grant and the
Typhonian O.T.O. He made the connection (in a sometimes very pseudo-historical manner) to dragon themed symbolism in Ancient Egypt and Babylonia, Tantrism and Kundalini of Hindu culture, and the modern magical-mystical teachings of Thelema. Grant's work is quite a chunk and hard to tackle, so I would recommend some other works first.
Bill Duvendack's
A Draconian Egypt Grimoire (2020) is good to get some inspiration for practical work. Yes, he is one of Asenath Mason's special friends, but I think he did a good job with this one.
Don Webb's
The Seven Faces of Darkness (1996) is IMHO a more sophisticated and original approach to the Sethian-Typhonian current.
Wholeheartedly I would recommend P.T. Mistlberger's essay on
Dragon Magic, in his book
The Dancing Sorcerer (2022). It's a good entry point for a more philosophical framework, liberating the idea of Draconian Magick from it's LHP clichés. It inspired me to delve deeper into this topic and to integrate some ideas in my personal work. Actually, I did get a little hint "from beyond" to do so while reading it.