In a post here recently the videos were all analyzed to ascertain propagation speed of the blast and the result is that it went faster than just ammonium nitrate with speed that matched ANFO which is Ammonium nitrate with enhancements.
I will search again - but if you have it in your history please copy me on the thread.
Especially if there is any proof that it was more than AN plus “fireworks”.
My personal bet was on Iranian and Hezbollah personnel fueling rockets, which started the fire and explosions. So far I can't promote the idea with the information found.