I wrote a detailed explanation about the liver and how keto uses more minerals and finding hydration with all five hydration salts is very helpful (ie biosteel )
But I can't post links., so here's my short version.

So eaas are essential amino acids. They dissolve in water. Can find eaas in bodybuilders stuff. I dont use much because there's histidine in there, and I spend a lot on antihistamines... you should google that.
I do some tailor designed amino acids for my condition.
Education is key, there's lots to find out, most of it recently published.

Ketones you will have to google. It's what the liver breaks down fats into. To be easier on th liver and bile system, there are strategies that the medical profession should look at since this diet has been shown to be therapeutic under certain circumstances. I would think that if one could make up the missing vitamins, vegan could reduce certain issues....

It may be easier to explain a green Mediterranean diet with fasting involved.

For keto we don't do that much protein because then the body eats protein,
We want it running on fats to get the benefits for the mRNA
Again, I had such a good document with many references for you but it couldn't send. I recommend that you take the decision to enter into keto quite seriously, and get professional opinion for your specific case. There's a lot to consider.
Understanding the role of the liver with the other organs is pretty key, and other medications and lifestyle factors may have to be considered... good luck