I should've added a "Dairy-Free" option.
Yes I agree that diet can be very individual, I just know that many people here have looked at diet objectively and tried many different things.
I seem to be having some sort of digestive issues no matter what I eat. I've spent the majority of the past decade in ketosis. I may be slightly in denial with regards to dairy, it is difficult to give up butter/cream in my coffee but I did recently give it up for a month. After studying keto I became a little bit fearful of carbohydrates overall, but I feel I may do better on a low-carb/paleo diet as opposed to keto.
It's hard to tell, and it's partly why a poll didn't seem so relevant, everybody's physiology and case histories are so varied, dietery requirements cannot but differ. I've been blessed to come to keto without any prior allergies or significant food intolerances. For the decade since this forum introduced me to keto, my body must've spent about 3, 5 years in ketosis, tops? I was more stringent about it in the first couple years, often going for 1-2 months of rigid, sub 0.5 oz carbs per day.
Since then I've been required by various life situations to show some flexibility, so I had to break out of the restrictive regimen - for instance, a month at an ashram here or there having a vegetarian yogic diet, a couple months at a vipassana center eating veggies again, etc - had to admit that going out of ketosis wouldn't instantly kill me ;)
In the last couple years, I had switched to carb loading every weekend or two, but now I've grown to be even more flexible. I'd say i'm on ketosis about 3/4 days a week, with intermittent fasting spontaneously thrown in there to flip back into keto as wanted - just the other day, I had about a cup of vanilla ice cream with some wild blueberries from the garden late in the evening. I woke up to sugar cramps, brewed my usual tall coffee with nearly a half-cup of 35% cream, and a couple hours later the pangs had faded to that chill keto "hmm, I guess I could eat...'
I guess I should count myself lucky, by this point I'm so keto-adapted that I can reasonably carb load, have my coffee the following morning and feel comfortably keto soon after that, proceed to a bacon and eggs breakfast. I wish it were so easy, but everyone has to figure out what works for them...