I think the Musciano contest was originated by the Northern Virginia Control Line (NVCL) club. They used to have Walt Musciano judge the planes for appearance. They also originated the contest rules and requirements.
Since not all folks could make it to VA, another contest sprung up in MI. I believe a third exists in CA. Perhaps there are others. Flying proxy is a good alternative if you can not attend the meets in person.
I think (hope) all use the same rules so someone could enter several contests.
A few years ago, Walt Musciano had to give up attending the meets because of health reasons.
Along the way, Black Hawk Models started supplying replicas of many of the old Scientific kits...with the help and approval of Walt. This was a boon to folks who prefer to build from kits.
If any of this info is not correct, please jump in.
George