There are so many I could list but in the interest of not overwhelming you I'll keep it short and just list a few places in each park that I consider QS (Kiosk or Window) not a full on CS for snacks and quick bites. (Snack - S, Lunch - L)
MK - Egg Roll Wagon (S: Eggrolls), Cheshire Cafe (S: Cheshire Cat Tail, Pepper Jack Pretzel), Friar's Nook (L: Buffalo Chicken Tots), Gaston's (S: Chocolate Croissant), Lunching Pad (S: Cream Cheese filled Pretzel), Sleepy Hollow (L: Sweet & Spicy Chicken Waffle sandwich)
Epcot - Choza de Margarita (S or L: Guacamole, Tostada de Pollo), Joy of Tea (S: Curry Chicken Pockets), Kabuki Cafe (S or L; Sushi),
Morocco Coffee & Pastries (S: Baklava), Pizza al Taglio (S: Arancini w/ marinara L: Margherita Pizza), Sommerfest (S or L: Nudel Gratin)
DHS - Neighborhood Bakery (S: Cookie Nom Nom), Pretzel Palooza (S: Cream Cheese filled Pretzel)
DAK - Dino Bite (Ice Cream Cookie Sandwich), Eight Spoon Cafe (S or L: Baked Macaroni and Chesses), Isle of Java (S: Tiger Tail),
Kusafiri Coffee Shop (S: Elephant Ear L: Curry), Mr. Kamal's (S: Seasoned Fries)