I just found this today, thought I would share it
www.adxs.org
Gets quite deep into the weeds but its very cool. It mentions ADHD but the material also talks about stress/depression/anxiety as well.
Has a section for every commonly known NT and hormone. Except T/E2 for some reason.

Neurological aspects of ADHD: Introduction to brain functions and disorders
Overview of basic neurological processes that play a role in ADHD - as a basis for understanding symptoms and therapeutic approaches.

Gets quite deep into the weeds but its very cool. It mentions ADHD but the material also talks about stress/depression/anxiety as well.
Has a section for every commonly known NT and hormone. Except T/E2 for some reason.