Prepare pasta as directed on the box, typically about 10 minutes. Add frozen peas with about 2 minutes left in the pasta preparation. Drain and rinse with cold water. Allow the pasta to sit in the colander will you prep the remaining ingredients
Add chopped celery, onion, and cheddar cheese to a large bowl with a lid. Add white vinegar, sugar, and tuna. Add light mayo and Greek yogurt and stir to combine. Add the cooled pasta and peas and stir until well combined.
Cover salad and refrigerate at least 4 hours before serving.