I don't know if the internal ramp idea was tried.
None of these things are ever tried. It's just an idea someone comes up with with no evidence it was ever used, and then they proclaim that's the answer! They are
unproven hypotheses. They are not the final answers. That's an important distinction.
These same people also insist they cut granite with copper tools!
Then what were they for? It's hard to beieve an advanced culure would have any use for them.
We don't know what they were used for. If we don't understand what they were made for, or what they are, how can you decide an advanced culture couldn't use them? That's a circular argument.
One interesting proposal is in the book
The Giza Power Plant.
I'm not sure he's totally right about his ideas, but he makes very valid points about many aspects of great pyramid and how it was constructed.
It was obvious to me since I was a kid that that thing was never even made to have people walking inside of it. It was also sealed shut, and an opening had to be dug by Caliph Al-Ma'mum and his men around 820 AD. If you look at existing Egyptian tombs, they are laid out like houses. They have rooms and hallways and doors and everything. They are also very decorated.
And as I said, no body was ever found in the great pyramid. It wasn't grave robbed, since it was sealed shut. And the "graffiti" that supposedly shows it was built for Khufu/Cheops was probably written by Howard Vyse when he crawled up there through a crack so he could be credited for the discovery.
There is also evidence that an explosion had occurred in the King's chamber that was then repaired. The explosion unseated the roof of the King's Chamber. Why would there be an explosion of that magnitude in a tomb? You can see the King's Chamber is cracked in several places, and in some were plastered up in ancient times.
The problem with mainstream Egyptologist is they do not want to rock the boat. Everyone has a career they want to hold on to. They didn't want to accept that the Sphinx was so old that it had signs of water erosion. The head that we see is newer.
The bottom line is we don't have the answered to what he Great Pyramid was for, and even who built it. The Egyptians kept thorough records, and yet thy have none for building the Great Pyramid, only for renovating the area around it.
And with my own personal experiences, I was told it was a device of some sort when I was in 1st grade. My older brother had a similar experience when he was younger, when as our mom showed him pictures of the pyramids, a voice told him not to listen that it was all lies.
So it's better to keep an open mind about these structures than to believe some hypotheses that can't be proven. Forget about how they moved those big stones... or even cut them with optical precision.. what's the damn thing for? A monument? Then why all the crazy and precise chambers and passageways and shafts inside? It's too oddly complicated to be a tomb or monument.
Now in comparison, look at the stepped pyramids in the area. They are crudely made and hollow on the inside. And many of them caved in. Those are likely made by the Egyptians we know. And they couldn't do it well either. And they were obviously skilled... look at the Valley of the Kings. That's where the tombs are.