Some answer.
1- About Jakob Ingebritsen, when I say that he already trains with a volume that the most part of seniors are not able to do, I don't speak about mileage, but volume of intensity. In his case, he is already able to do workouts of specific speed with the volume used by top athletes after many years of training. Is this choice a winning choice ? We can only wait and see, because I think NEVER some boy not yet 18 tried to train in so specific way in the past. However, there is a big difference between athletes in HS in US, training very hard with intervals at high speed, and Jakob : he also has particular care about building his Aerobic Power, running many times very fast for some km, and that's the reason because is already good in 5000m.
So, don't speak about 120 miles per week, this is not the choice, and doesn't happen. But in his specific workouts he is not fasr from the volume of Filip, who is 7 years older.
2- About Asbel Kiprop : people can think what they want, but the fact is different. Asbel was in the IOC training camp in the period 2005-2008, followed by Jimmy Buttah, who was the coach of Moses Kiptanui and was named responsible of the Center by the Chief of the Development of IAAF. He lived inside the camp, eating the normal food of all the other boys and girls coming from 17 different African Country, and paid by the Olympic Solidarity. He was controlled on daily basis, nobody could leave the Camp without permission, and the possibility of doping didn't exist.
In that period, he ran many km, and for that reason he won WJCh in cross country in 2007.
In 2008, when was still in the camp, already ran 1'44"71 and 3'31"64, without specific preparation for the short distances.
I can guarantee that till 2012 he never took anything (also legal), so 1'43"15 and 3'28"82 are performances totally clean, in spite of a continuous loss of endurance, because he didn't like to run long and fast.
I strongly believe he never took anything till 2016, but of course what I believe is not what the most part of posters believe. What I know for sure is that his training NEVER had the right continuity, and NEVER was well balanced.
Somebody speaks about David Letting as his coach. Letting is a person totally involved in athletics, and is one of the most active and hard workers for developing athletics in the area of Eldoret. He was (and still is) the man coordinating all the training camps of Rosa, but NEVER really coached Asbel, who used to decide himself what to do, without a proper plan.
After the bad competition in Eugene 2016, he came to me asking help. What I told him was "You can be the first athletes under 3'26", if you understand that in training you have to do what you need, and not what you like only". He tried to follow my advice, but after very short time decided to do again what he liked (cutting every training of long endurance at high intensity) because a program with more workouts of Aerobic Power was to hard for him. I don't change my idea that, with proper training from 2007, and different tactical choices during the races, he had the talent for running well under the WR of El Guerrouj.
3- About Eliud Kipchoge : he is of sure a great talent, but his greatness is in his mind, his brain, his continuity in training, his professionalism, because like pure physical talent I can name not less than 10 athletes who had more "natural talent" than him. Two of them were my athletes : Nicholas Kemboi, running 26'30" with less than 3 months of real training in 2003, and able running 26'51" after 15 days of plastic and crouches after WCh 2005 when he was spiked on the tendon, and 4 days walking + 2 days jogging, staying with Kenenisa Bekele bettering the WR practically till 7 km (13'10" after 5 km).
The other is Moses Mosop, called "big engine". If Moses could have only 80% of the professionalism of Eliud, the WR of marathon could be already well under 2:02:00. Eliud is the only Kenyan athlete who wrote ALL HIS TRAINING from when started to work with Patrick Sang, and at the end his continuity was the winning quality.