Tbh I don't think we can really rank within individual elements effectively. Not across the board, at least. E.g., comparing Alhaitham and Kinich is like comparing apples and oranges. They're both dendro DPS, but that's where the similarities end. Kinich excels in his niche - single-target burn or burgeon. He's a hypercarry, and burn and burgeon serve to boost his personal damage, rather than being a significant source of damage themselves. He's a DPS whose element happens to be dendro. Alhaitham is more versatile. He has better AOE and dendro application. He excels at quickbloom/hyperbloom/spread, and he's a solid bloom driver/enabler as well. His focus is elemental reaction damage. He's a DPS who does damage via dendro. Asking which one is "better" is like asking whether a fish or a bird is better; the answer depends on the context.