There is a healthy sweetener called Allulose that actually has evidence of lowering blood sugar and insulin, but even shows evidence for fat loss directly. 

Meet The New Healthy Sweetener:  Allulose  

Benefits: 

-Does not raise blood sugar or insulin levels  

-Has anti-inflammatory properties    

-May help prevent obesity & reduce the risk of chronic disease  

-May boost fat loss  

-Tastes/measures like table sugar

Allulose is a rare sugar that naturally occurs in nature, just usually in small amounts.

Studies:

https://pubmed.ncbi.nlm.nih.gov/21187061/

Rare sugar D-psicose improves insulin sensitivity and glucose tolerance in type 2 diabetes Otsuka Long-Evans Tokushima Fatty (OLETF) rats

https://mdpi.com/2072-6643/15/1

Nutrients, Volume 15, Issue 1 (January-1 2023) – 252 articles

https://mdpi.com/2072-6643/10/2

Nutrients, Volume 10, Issue 2 (February 2018) – 149 articles

https://pubmed.ncbi.nlm.nih.gov/26920079/

d-Allulose supplementation normalized the body weight and fat-pad mass in diet-induced obese mice via the regulation of lipid metabolism under isocaloric fed condition

https://pubmed.ncbi.nlm.nih.gov/36461919/

d-Allulose Supplementation Prevents Diet-Induced Hepatic Lipid Accumulation via miR-130-Mediated Regulation in C57BL/6 Mice