We buy a jar of mayo maybe once a year. But when we do, it’s Hellman’s. I am not that brand-conscious when I shop, but there are a few exceptions, and prepared mayonnaise is one of them.
Most of our (very limited) mayonnaise needs are met with eggs, oil, and a food processor (or whisk).
My mother was, and one of my sisters still is, a big Miracle Whip fan. I haven’t tasted it in 45 years, at least. I thought it didn’t qualify as mayonnaise because it was made without eggs, but brief research showed that it doesn’t qualify as mayonnaise because it has a bunch of corn syrup and spices in it. It does contain eggs, but probably less proportionately than mayonnaise.