Drug tier numbers and other term meanings?

I’m looking at a plan that is similar to the one I am on. It is $50 more per month (which is a squeeze honestly), but appears to cover mental health stuff in a way that works better for me. Appears. I don’t know. Get out the countable objects and whiteboard for me (ELI5 essentially).

Not asking about the tiers themselves since that is explained plainly enough on the insurance company’s pages. Rather, I have this and I have no idea what this actually means for reality. I am not paying $10 per rx, and insurance typically covers more than $10 on the expensive meds, so I don’t understand the number. The more expensive plan has three tiers and they look like this.

The other thing is some terminology I keep finding adjacent writings about, but don’t answer my question. As stated, I am fundamentally not understanding any of this, so anything I find comes across as too densely packed for me to decipher.

The reason I’m looking at all at another plan is that my current plan changed within the past two years from a $40 copay for visiting my psychologist (and other payment afterward) to… “50% maximum allowance.” I have not had an appointment with this psychologist during the time of the changes, so this is a surprise. I do not understand the terminology but the response I got from billing at psych’s office was confusing and suggesting this is not ideal. The more expensive plan instead says “$50/visit, no deductible.” In the raw text it does not say this, but searching the plan specifically I found another document that seems more like a shipped pamphlet that has “(You will pay the least)” listed on top of that column. I’m completely lost on this.

Any help you can offer would be very much appreciated, and I thank you.

Notes: The current plan is this. The one I am looking at is this.