None of these feel like a good idea. Maybe the last one if it's some sort of complicated swell-opt or something, but even then probably no. I'm extremely into Bellinger on something like Carlos Correa's first deal with the Twins (3-4 years, high AAV, opt-outs after every year), but not really under any sort of long term deal.
Relatedly, I think history is going to look back at AJ Preller's '22-'23 offseason as just an unmitigated disaster, nearly as bad as his very first one where he traded every prospect with a pulse for Matt Kemp et al. Giving decade+ long deals to guys outside of the Harper/Machado/Seager class of FA's is so unbelievably dumb. The early extensions to Machado and Darvish being a mess was easy to see coming as well.