There are really only a few battery makers.
Major companies
Trojan is considered the best Flooded wet cell though I'm not sure the quality difference is greater than the price difference.
US-Battery and Johnson Controls And Deka all are very good companies and cheaper than Trojan's.. DEKA owns the only lead smelter in the US (East Penn Battery Company).
Excide.. Not sure how they are today but .. Well in the past they have not had the best reputation.
There are SOME "Boutique" brands Small companies, very high quality as a rule and also more expensive even than Trojan's. (Trojan is a big company)
MOST other brands are either Johnson Controls, relabeled (Costco, Sames and others) or US-Battery (Also sold under Costco and Sam's house labels)
Batteries Plus is I believe Excide (Why I do not buy 12 volt there).
Recommendation: Sam's Club usually has a good price on GC-2 (Six volt golf car) batteries, Made by either Johnson Controls or US-battery depending on where you live/buy them,. Or.. DEKA if you wish to support "Made 100% in the USA".