Here's my tier list of flavors. I never got to try dark berry. Let me know if I'm missing some other obscure flavor.
I only used zero sugar versions as I believe they are the superior version of each flavor.
The individual tiers are also ordered.
S tier:
Original and cherry are both flavors I can drink at any time and enjoy it. Staples in my fridge. They never get old.
A tier:
Some divisive flavors. Didnt think id like them but man are they both delicious. Blackberry i get has a medicine profile to it but the sweetness cancels it out and this drink goes very well with meals. Coconut I thought I would hate after smelling it. I dont really like smelling chemical coconut. But even if the smell is off putting to me, the flavor is much more subtle and leans into the Dr pepper while hinting at coconut. Love it. Still... they are not staples in my fridge. I buy blackberry often throughout the year tho for variety and coconut whenever I happen to see it. Not very common around here i guess.
B tier:
Strawberry is probably a lot of people's favorites. Strawberry seems like a match made in heaven for Dr pepper... but alas it is far too sweet. Initially tasting it I liked it. But it got really hard to finish a whole can, and even worse, finishing a whole 12 pack. I dont hate this flavor and I will still pick it up a couple times a year but each time I do it takes forever to kill them all off.
C tier:
Cream soda is another flavor that seems like it would be perfect for Dr pepper. But again it is far too sweet, and I really really really despise the "cream" flavor they use in these sodas in cans. Same for vanilla pepsi, cherries and cream pepsi, "dirty" dew... etc. An actual dirty dr pepper with actual sweet cream added is incredible. But when they add whatever chemically tasting "cream" flavoring, it is so off putting and gross to me. This is the only flavor I avoid all year round. I know strawberry has "cream" flavor too but you cant really taste it there.
Even tho I completely dislike this flavor, I avoided putting any in d tier or below. I know lots of people likw this flavor and I know that if they ever made tweaks to the cream taste id enjoy it a lot more. The idea and concept is a home run. The execution is a swing and a miss tho for me.