Juniperus | spreading vs upright

Is my understanding correct that most bonsai are made from spreading juniper over the upright varieties? I will be picking up a juniperus sabina soon but i was wondering if it would be worth my time to try with a juniperus scopulorum.

In my experience we have used virtually every shape of juniper as starting material for bonsai. We look at the tree (in nature or in a nursery pot) and simply decide if we seen a potential bonsai there. MOST -- but not all by any means -- juniper bonsai are probably Juniperus chinensis, and they come in all shapes.

I don't know much about Junipers, and the first 2 trees I bought (a few months ago) were discounted junipers from a nursery because nobody wanted them. They were pretty ugly and still are, and I don't even know if my Sabina is alive. The label says it's a Sabina Arcadia and it's zoned 2a which is excellent for my location (zone 3).

I happen to have a picture of the trunk, but you can't really see whatever foliage there is. And in the background, the other juniper, a Danube.

I have 0 technique, but maybe it could be a raft style, one day, if it's alive? lol