Of course none of this is answering the original question.
So, to clarify, here are some questions that would float through my mind if I were hiring for a pro SM or ASM position and received a resume from a recent college grad:
- Do they have experience in dealing with cast members of all ages and backgrounds, or only college kids?
- Have they worked in the type of house that we have here? (e.g., Arena, Thrust, Black box)?
- Do they understand the budget constraints of professional theatre or have they only worked in environments where money is no problem?
- Have they worked in a situation where designers are not all immediately accessible and on hand?
- Have they worked in a situation where they don't have a prop shop and/or costume shop nearby to pull rehearsal props and costumes?
- Are they familiar and practiced in dealing with union regulations?
- Do they have the aesthetic skill and sense of timing necessary to maintain the types of shows we produce? (e.g., script analysis, character preservation, timing for audiences, training & putting in understudies)
Now, when you say "concentration" you could mean either of two things. One, your college (like my alma mater) calls the traditional "major" a "concentration" instead. This means that I "concentrated" in theatre arts. Alternately, your college may have a "theatre arts" major, with any of the concentrations you listed as sub-options to delineate your focus. If you were to define my college experience this way, I "majored" in theatre arts, but "concentrated" in surrealistic French marionette theatre of the early 20th century. Note that I did not "concentrate" in stage management. However, by the time I graduated I had probably 15 university stage management credits, 8 professional stage management credits and 2 pro directing credits on my resume.
As for which is the best to choose? Go with the one that gives you the most connections and hands-on experience with third-party performing arts groups. If none are available, go with the one that leaves you enough time to pursue these third-party connections on your own. Work on some school productions - the connections you make with your classmates while doing them may come in handy later in life. But make sure you find a way to diversify that experience so that you can bulk up your resume and have opportunities to apply your classroom learning in real life situations.