I am partial to Allulose [1] and Stevia [2]. A lot of people find their taste bad, but I've grown used to them, so much that I don't "taste" them anymore.

[1] https://www.cambridge.org/core/journals/british-journal-of-n...

[2] https://onlinelibrary.wiley.com/doi/full/10.1002/fsn3.2904