I annotated the above picture. The format is <Aori's Team> vs <Hotaru's Team>, and I bolded the winners of each match.
Basically, each of the medals represents a win for Hotaru, and each of the items is representative of each Splatfest.
Tuna Mayonaise Onigiri vs Red Salmon OnigiriLove vs MoneyBoke vs TsukkomiRed Fox vs Green Tanuki, Round 2Mountain Food vs Sea FoodRice vs BreadGo All Out vs Focus On HealingSquid vs OctopusLemon Tea vs Milk TeaGrasshopper vs AntMushroom Mountain vs Bamboo Shoot VillageRed Fox vs Green Tanuki, Round 1Perfect Body vs Perfect BrainFancy Party vs Costume PartyAori vs HotaruPokemon Red vs Pokemon Green