Looks like the Limitless card is only available to Louisiana residents now, so I missed my opportunity there.
Also for those who have the Blue Cash Preferred card, check your statements to make sure the grocery store or whatever place you expect to give you the 6% cash back is actually doing so.
My hometown Hannaford did not, so I looked for a list of eligible places online. Now I go to Winn-Dixie and buy a $500 Visa gift card every month, which is still about 5% back after you take the activation fee out (already checked my statement to confirm they'll still give the 6%). The gift card helps me reel in discretionary spending while I pay off my credit card, and it's effectively 5% cash back on everything. Plus you don't have to worry as much about credit card skimmers. The downside is that it's basically a debit card, so if you lose it or it gets stolen you're almost certainly SOL, to the tune of up to $500. Technique only.