I feel like this question is poorly formed in the age of resume-driven development. I prefer types of problems to tackle. But, I don't have preferred stacks so much as stacks I dislike less that are prescribed for my consistent employment.

My least disliked stack is the one that doesn't make me obscure, keeps my future career progression options sub-/Pareto- optimally open, while still making my pay competitive. So in essence I align with whatever is the easiest to adopt and train others on with minimal supervision.

i.e. JS, React, Express, Docker, AWS