Low carb only, not keto currently for over a year. Did keto for several months a couple years ago. I started low carb soon after my son's Type 1 Diabetes diagnosis. Learned a ton really quick... mainly by reading "The Diabetes Solution" book. The author died earlier this year at 84 with no diabetic conditions. I eat mostly like my son does and he has excellent control of his blood sugar. AC1 has stayed within a normal (non diabetic) range within 8 months of his diagnosis.
I don't see the benefits of any high carb diet. I used to be a sugar (sweets of all kinds) addict. I have wya few muscle spasms in my back, which plagued me most of my adult life. Much less brain fog and good energy.
I'm sure some people need some different version of diets, but high carb is done I cannot comprehend from a long term health perspective.