"Wildly" productive Moschata/Seminole Pumpkin

I've recently learned of a more or less stabilized Moschata cross called "South Anna butternut" that has me intrigued.  It's supposed to be a cross between Seminole Pumpkin & a butternut, though I don't know which butternut.

In my research, I've seen that many Seminole Pumpkin strains are a bit variable in size & shape.  Some are small like Cherokee Tan & produce tons of fruit, and some are a bit bulbous & larger with fewer fruits.  I'm not so much interested in seed purity of a specific variety, but general productivity.  Everything that I've read says that Seminole Pumpkins are generally regarded as extremely prolific with a storied history in Florida.  

My question is this:  Does anyone know of any other Seminole crosses that are good producers per plant, or is this the only commercial one available?

From; https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/seminole-pumpkin.html

Traditionally grown by the Calusa, Creek, and Miccosukee peoples, Seminole pumpkins remain one of the tastiest and most reliable pumpkins for Florida gardens.
The Seminole people gave the name "Chassahowitza" to a region on the gulf in Southwest Florida.
The name means "pumpkin hanging place." It's likely that the pumpkins they were referring to were Seminole pumpkins, or a related variety.
Gardeners in the Sunshine State sometimes struggle to find vegetables that will make it through our relentless summer heat.
Florida’s Seminole pumpkins just may be the answer to their search!

Seminole pumpkin produces very well and very reliably, as does South Anna. South Anna is a Waltham/Seminole cross. South Anna and Seminole (a smaller, productive variety) can both be purchased from the South Anna breeder himself, at www.seedwise.com. Also available from Southern Exposure.
In my experience, Seminole produces well, but it NEEDS a lot of water and space, and shouldn't be planted into compacted soil. You’ll get an initial flush of fruit that you can harvest in late July or August, and then a second flush as temperatures cool in August/September. The second flush may not have enough time to fully mature, but they make an amazing summer squash when picked while the skin is still glossy.
South Anna works much the same as Seminole, but it didn't have quite as large of a second flush, and didn't require quite so much water.

Oops, didn't fully read your question. I don't know of any other Seminole crosses that are commercially available. I made a cross last year, between Butterbush and Seminole. I'm growing the F1 hybrids this year to gauge their productivity and flavor. If it seems like a winner, I'll begin developing it, but it would be a few years before I could offer any amount of seed.

Josh,

Good luck with your F1 crosses & please keep us posted.  I can see a valid need for more bush types as gardeners often want to grow in smaller plots than a traditional fully vined varietal would allow.

Thanks! I'm hoping for something like a medium-vine variety. Something that can still root at the nodes for vine borer resistance. We’ll see how it goes!