Jokic lost to Portland in the 2nd round in 2019
Swept by Phoenix in the second round in 2021
Lost to the Timberwolves in the second round in 2024
None of those teams were the "best team in the NBA"
2019 Jokic was 23 and Murray was 21 vs a seasoned Lillard and McCollum, still super closely contested 7 game series
Phoenix was the best team in the NBA around 2021, they won 64 games the following season
The TWolves are the only team you listed where the Nuggets should have won. However the TWolves were built well to counter Jokic, as the Knicks are optimized to counter the Celtics