Hi, codequeen! Thank you so much for replying!! 
So, here are a couple screenshots, one from inside the CMS and another from when you click the three dots in the outside menu and “SEO Basics”. I tried to set it up with variables.
Right now as you can see the structure is .com/every-me/species/type (in this example, .com/every-me/apple/honeycrisp). The first “every-me” part is meant to be the overall encyclopedia directory. Then, the “apple” part takes you to the main apple page. The “honeycrisp” part takes you to the specific type of apple, in this case, a honeycrisp.
Ideally, as mentioned, since the goal is to make an encyclopedia of life, the goal is to have a .com/every-me/plant/species/type structure…and .com/every-me/animal/species/type…and .com/fungus/species/type…etc. But my problem is each of the “parts” (the areas between the slashes) needs to have its own unique appearance, while maintaining the breadcrumb/URL structure.
There are other parts of my site that I have this same question about. For example, there is a “learn” component of my site, that functions as an online university where you can learn anything you want. So the structure would be: .com/learn/schools/math, .com/learn/schools/art, etc. But the /learn/ section would be the general homepage. The /schools/ part would be the entrance portal and info about all the schools. The /art/ last section would be the pages about the actual schools.
The same goes for the “live” component of the site (providing you the best things of a good life), with a URL structure of .com/live/eat/fruit, .com/live/eat/bread, .com/live/eat/dessert, .com/live/drink/water, .com/live/drink/juice, etc. And so on for the 4 other main components of the site—the “play,” “create,” “party,” “win” areas, with a similar URL structure as the above.
I don’t know how to do what I’m talking about because I need to maintain the URL/breadcrumb structure, while having a mix of static/dynamic pages that depending on the /section/ of the URL are different from each other.