How Michael Phelps swims

These are my observations on the techique of Michael Phelps, the 1st " Modern swimmer" for all 4 strokes. He is swimming using the most " cutting edge " of techniques on all 4 strokes. Free: Looks like 'Popov', same stroke rythym, " Gallop" in stroke, Bent arm recovery, Shoulder shifting forward ( not dropping shoulder) and underwater phases of pull show principles of " Australian Crawl". He also has a very smooth Hand entry, hand almost flat. Back: Head lies lower in the water, eyes looking up, very still head. Just like 'Krazyleburg'. Shoulder shifted back, horizontal to the water on entry - catch, no dropped shoulder here. ***: Head held in ' neutral ' position, eyes looking at a fixed point ahead, Head does not shift position. His head does not 'bob' up and down, which is 'old style'. Fly: Head position "same as above" does not 'raise head up and jut chin forward' ( Old style). Hand entry wider than shoulder, immediate catch and into the pull, timing characteristics of "front end fly". To sum up, Phelps swims all 4 strokes using the best technique shown by World beaters. Free as Popov, Back as Krazyleburg etc. He will dominate his events until someone comes along who is also using " best technique" in each stroke. Who is coaching Phelps? This is a coach who is ensuring that he is "up to date " with latest technique and is learning from the best so that " His swimmer can be the best". That I Admire !