Three bean salad tips, favorite recipes?

Looking at recipes for three-bean salad.

NCFHP has a recipe that marinates the beans for 12 hours in the fridge, which seems like a good idea.

https://nchfp.uga.edu/how/pickle/relishes-salads/pickled-three-bean-salad/

Healthy Canning does not marinate the bean salad before processing.

https://www.healthycanning.com/four-bean-salad

Marinade or not? Some writers say white vinegar is too harsh and to use 5% red wine vinegar? Any other tips, ideas, famiky favorite safe recipes?