Bernal like Froome had a big crash and neither were the same afterwards. Same with Jonas. Riders now are breaking long (or short) standing records. Pog and Jonas broke the Tourmalet record set by Jonas 3 years earlier. Probably need to speak to someone in the performance dept. If there is a magic bullet out there Ineos haven't got it and neither have Visma.
I'm not sure we can put Jonas in that bracket tbh. He seems to be at a good level after his crash, it's just that Pogacar has gone up several levels in the same timeframe. Heck, I'm not sure we can really say that about Bernal either, if what he said about his power numbers being the best ever at the Giro this year were true. He seems to have come back well if that's correct. I don't really know what happened to Froome, but as was demonstrated with the stat about Sagan's PR winning time would have had him last by several minutes this year, peak Froome would have probably been not far off where Froome actually was in his final years. As I showed above, there has been a several percentage point increase in speed.