Best guess.. Yellow wax pepper.

Sweet Banana is also a possibility.

Looks a lot like 'Gypsy' only not as plump, which is a darn fine pepper that will outproduce Ivory on its best day.

it may be a cross of the ivory with an unknown hot pepper - maybe hungarian hot wax as the other parent.

What is the source of the seeds? traded or purchased from a company?

I've been hearing a lot about people getting ripped off on seeds lately - seems some people are selling the seeds they buy at the store for eating or maybe selling the seeds they find inside their produce from the store!

I can't imagine these are really gardeners. Just mini-grifters.