Here's what 3 minutes of googling indicates:

* most states have b corps * most states that have b corps based them on the Model Benefit Act, drafted by B-Lab * Delaware has b corps, but they are not based on the Model Benefit Act * whether the Model Benefit Act was used affects all sorts of things (requirements, reporting, standards, decision makers, enforcement…)

So it seems fair to say that delaware has b corps, but they are not like the others.