[Spellman]

I also highly recommend The Sourdough Journey for a lot of the science and showing how different variable can affect the results.

https://www.youtube.com/playlist?list=PLMNnFRtsaxxzZsbxK3yAj...

His chart showing Temp and Time for Bulk Fermentation gets referenced A LOT. Key is higher temp means faster bulk fermentation.

https://thesourdoughjourney.com/tools/