I occasionally shop at Whole Foods, and like
@AmyAnne, I'll buy a Whole Foods gift card from an office supply store to carry in my wallet. The Chase Ink Business Cash (CIC) earns 5x UR at office supply stores. The CIC is a $0 AF card.
I also buy
Amazon gift cards from office supply stores with my CIC for 5x UR, which I sometimes use to buy Whole Foods gift cards. Amazon allows you to purchase third-party gift cards, like Whole Foods, with your gift card balance, and Amazon occasionally has Whole Foods gift cards on sale as lightning deals. A few months back, it was possible to purchase Amazon gift cards with the Chase Ink Business Preferred (CIP) through Gyft and Swych for 3x UR, but Amazon's since removed their gift cards from electronic gift card marketplaces.
Earlier this year, the Chase Freedom included Apple Pay in its Q1 5x UR bonus category, which I used a few times at Whole Foods, and the Q2 bonus category included grocery stores, including Whole Foods.
There are other cards that'll get you a discount at Whole Foods, like the Chase Amazon credit card gets Prime members 5% back or 3% back for non-Prime customers; the Amex Blue Cash Preferred gets you 6% cash back on up to $6,000/year at grocery stores. But these cards don't come with very big signup bonuses, the Amazon Prime card is not subject to 5/24, and the Amex BCP will add to your */24 count, so it's usually advised to not waste an under 5/24 slot on these cards -- save them for later.