I dont discriminate with fries.... I'm totally mixed too - I fucking love me some waffle fries from Chik-Fil-A, and I think they taste best without ketchup.
Then there are very skinny / string fries are fucking awesome too....
Then there are standard fries like Whataburger (similar to McD) fries that are nice and crispy - but these I think taste best with some nice ketchup (preferably heated ketchup).
Fries in the shape of chips that are crispy are fucking awesome too. Also sweet potato fries can be yum as well.
That said, I will discriminate against one fry - fuck that crinkle cut or "steak fries" shit where 90% of it is just potatoes inside. I would hope ATOT could agree that shit is horrible... with or without ketchup