Here's my take, ya
Lil’ Sneak...
There
are enclosures that come with (or people have installed) LED strips, e.g.
https://www.amazon.com/Zoo-Med-ReptiBreeze-Aluminum-Habitat/dp/B014Z4IOC2?th=1&psc=1
but AFAIK, those LED strips are only good for viewing a cham when ambient lighting is inadequate—they're not intended as supplemental plant lighting.
I agree that (and this is my opinion from my understanding of enclosure lighting) most lighting
should come from the top—or slightly angled from the top. This could be from more than one source to increase lighting farther down, but all sources should be
primarily from the top.
Looking at it from a
plant perspective, different plants have different lighting requirements (e.g. full-sun, partial-sun, low-light, etc.) and enclosures can be planned & set up to take best advantage of these factors.
IOW, I'm planning my enclosure to have low-light plants at the bottom where they're likely to receive the least light, partial-sun plants at mid levels, and full-sun plants at or near the top.
No amount of planning is perfect, and adjustments may have to be made later, but it seemed like a plan...