Consider these statements.  What I want to convey is that most Alphas will die, that Tom, Dick, and Harry as Alphas are very likely to die, but it's not certain; and some Betas will die.  (We already know by this point that Tom, Dick, and Harry are Alphas.)

> Almost every Alpha, Tom, Dick, and Harry, and some Betas, will die.

Does this mean that almost all Alphas and some Betas will die, and Tom, Dick, and Harry will die for sure?  What about the next?

> Almost every Alpha, including Tom, Dick, and Harry, and some Betas, will die.

> Almost every Alpha, including Tom, Dick, and Harry, and some Betas, will likely die.

(I think this last one seems to say that it's likely that most Alphas will die, but maybe nobody will, which is not what I intend.)