My grandfather is a 7w8 Sp/So, and he is an ESTJ. Alec Baldwin is very simiular to the 7w8 So/Sx ENTJ Cary Grant and George Clooney, same type of actor who use their fame to be a whore of the democrat party. I've seen Alec B typed as every TJ character, but the fact that he is typed as ESTJ and ESTP makes me think more about ESTJ, plus i got the impression that he has more Si, that he is more grounded and less idea oriented than the ENTJ George C or Quentin T.
He's also less spontaneous and more planning than the ESTP Jack Nicholson. He's a Social 7w8, he is epicurian, has social grace and is a though force that you have to deal with, but he's not as craving intensity than the So/Sx 7w8 Jack N, Cary G, Quentin T, George C or Lucille B. He is more formal and routine bonds, but perfectly able to be charming and to "clean the room" socially.