1. 1994 Hakeem Olajuwon
Otis Thorpe made a single all-star game in 1992. Sam Cassell made a single all-star game 10 years later in 2004. As far as I can tell, that is the entire all-star history of the Rockets roster from 2-15. Without looking it up, I can't imagine any other champion matches this. Probably not even if you threw out 40 year old 12th men who made 10 all stars but shouldn't count. If I could get all the data off basketball-reference, I would love to do a calculation weighting playoff minutes, all-star appearances and distance from the all-star appearances to see if any team even comes close. And they did it facing the 8th best combined opponents SRS for a playoff run, with even 1st round Portland being an abnormally good +2.6 for a 7th seed.
Hakeem was an SRS underdog already in the 2nd round against the defending conference champs Phoenix and put up 37/17 in game 7. Was equal in SRS to prime Malone/Stockton with Hornacek and made easy work of them. Was almost a -3 SRS underdog in the Finals and won while massacring another Top 50 player.
The '95 Playoff run and his demolition of David Robinson is what gets talked about a lot, and rightly so, but I think what Hakeem did to Ewing on both ends in the '94 Finals is one of the most underrated big stage performances ever. He averaged 27/9/4 with 4 bpg on 56% TS while holding Ewing to 19/12/2 on 39% TS. That's -16 from his RS TS%. That may even be more impressive than the '95 matchup with Robinson who at least managed to score against 'Keem at a decent rate.
This. Every game in those Finals was decided by single digits, including a 2 point game 6 where Hakeem held Ewing to 6/20 shooting (and blocked Starks potential game-winner). Even the slightest lack of domination by Hakeem and his team doesn't win those Finals, even down to shooting 86% from the line. 26.9 ppg on 50% shooting against an all-time defense and frontline is impressive.
**If you want to feel worse for Ewing, in the 2 regular season matchups, he shot 9/35 from the field while averaging 12/8 to Hakeem's 33/17. One of the most complete dominations of an ATG by another ATG over the course of a year.
2. 1964 Bill Russell
I don't know as much about individual Russell seasons as I would like to, but it seems a Bill Russell season should show up at some point. They dominated 4-1/4-1 in the playoffs and this is the all-time rDRtg season I believe, so it might as well be this season for the most dominant defender ever.
3. 1987 Magic
Bounced back from 1986 playoff failure and won 65 games. Huge scoring increase. 27.0 PER as a high assist point guard is pretty crazy. Kept up the stats in the playoffs and comfortably won the title while going 15-3.