Here are all their bantam chicks. They only offer some sexed (Crele OEGB, Dominique bantam, Barred Bantam Cochin, and others) because bantams are hard to sex.
https://www.cacklehatchery.com/product-category/baby-chicks/bantam-chickens/
I’ve never ordered that specific assortment. I’ve only ordered sexed birds from Cackle, I don’t have the space currently to do a bundle. I want to in the future though. But yes, you would probably expect ~50% males.
For bantams I totally recommend bantam Cochins. They aren’t rare but they are the sweetest little fluff nuggets on the planet.
Or if you want a surprise you could try this assortment from cackle. They have great quality birds.
https://www.cacklehatchery.com/product/assorted-purebred-bantams/