Advance Auto shows either 24F or 35 as appropriate battery sizes.
15 years ago, batteries used to be more generic. Walmart sold one, the DT-3N, that had both top and side terminals. It may have also had a removable plastic spacer underneath so that it fit a particular hold-down bracket. Ensure any battery you're looking at doesn't have this spacer.
You have a 1.2 kilowatt starter motor. At 9 volts (where batteries dip to during starting) that only draws 133 amps. Honda is already giving you a nice fudge factor with 550 CCA. And take note that it can maintain 550 amps for thirty seconds of cranking.
Walmart batteries vary by region, but the first two characters of the serial number tell the manufacturer. EP supplies my region, "East Penn (Deka.)" Exide is the worst of the big makers, so if you liked a new Exide, you'll like anything. Walmart.com will not tell you who supplies your local store, nor will it show all available options or appropriate pricing.
Finally the "Honda" branded battery you'd get at a US dealer is not going to be the same as the OE factory puts in but rather a "service replacement."