Japanese Lays had this cucumber flavor a year or so back. Idk if it's still out there but the asian market near me stopped carrying it
It was absolutely divine, and amazing both just as is and on sandwiches! And it was the "original" lays style (the thin sort of puffy lightly crispy kind), which normally I don't much care for but it just WORKED perfectly.
Otherwise sour cream and onion or cheddar and sour cream for basic flavors. Lays currently has a special barbecue flavor (I forget exactly) but it's a bit more savory and spicy which is good. Zapp's Voodoo Chips are really good (barbecue meets vinegar. They have a spicy I wanna try but haven't yet), Salsa Verde Doritos are my favorite but hard to find, and I was nuts over Krunchers Sweet Hawaiian Onion flavor. They were hard to find but I found a source and proceeded to eat them so much that I got kind of sick of them!
Also Garden Salsa Sun Chips are my favorite on Subway sandwiches. Not too crunchy, cheese flavors blend in, and strong flavors overtake the sandwich. Subways around me now only have the cheddar flavor, I hope that's only temporary because of the virus. I miss the salsa flavored ones