Remember reading this article a while ago - congratulations man, that’s awesome!
In my experience the most efficient calorie burning workouts are Sweet Spot workouts. Compare the calories burned on Galena and Palisade
https://www.trainerroad.com/cycling/workouts/1266
https://www.trainerroad.com/cycling/workouts/1262-palisade
Even though Palisade is definitely a harder workout you’ll burn (slightly) more calories in sweet spot while accumulating less TSS - thus, better able to hit another sweet spot workout sooner and accumulate even more calorie burn.
If your primary goal is weight loss I’d stay in sweet spot base for a looooong time as it is extremely effective at burning calories.
It will get you in shape for long rides and will gradually lift your FTP - but not as quickly as mixing in a build here and there. It really depends on how you want to prioritize fitness gains vs weight loss. Assuming a primary goal of weight loss the long term view I’d propose would be something like SSB1->SSB2->SSB1->SSB2->Sustained Power Build->SSB1->SSB2->Sustained Power Build
This won’t get your FTP climbing as quickly as a more aggressive Base->Build->Specialize, but will be the most efficient way to burn calories and drop pounds