I’m glad that the course has created some more curiosity about one of the medicinal mushrooms you have been taking. I will point you towards this link which is just a Google Scholar search result for the benefits of Hericium spp. (meaning Hericium species) which as you can see there is a massive pile of research on Lions Mane mushrooms and their isolates. You could take a skim through this list and find what you might be looking for specifically. https://scholar.google.ca/scholar?q=benefits+of+Hericium+species&hl=en&as_sdt=0&as_vis=1&oi=scholart
Even though a mushroom or plant is not just it’s chemical constituents, you could do a Google Scholar search for their known medicinally active compounds as well. Hericenones and erinacines are two that seem to impart cognitive and nervous system support. Here’s one article to get you started there. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5987239/
Another note is that there is a Medicinal Mushrooms course in the CHP program and there is also a virtual class that occurred on Thursday October 27th, that is specific to Mushrooms for Brain Health with Robert Rogers. Did you sign up to this class by chance?
Lions Mane is not directly considered an adaptogen as far as I know, but it has many qualities that support the nervous system and brain health leaning towards an ability to cope with stress better.
I hope this helps springboard you to what you are looking for. If you have any further questions, please don’t hesitate to keep asking!
All the best,