My D applied to 18 colleges (for BFA musical theatre programs, thus the large number of applications). Despite high stats and college courses, one college that she was accepted to artistically asked for a GED. D refused and withdrew her application; it was a ludicrous, close-minded demand, especially since she’d be in the top 5-10% of freshman students. Even without her stats, we, like the poster above, wouldn’t have gone that route. None of the other schools asked for anything extra from her, and she was accepted academically to all.
Your own diploma, transcript, and course descriptions will be enough for most schools. Of course, once you determine your favorite schools, check with them. (Call them. That school I mentioned above listed nothing on their website about the GED requirement.)