#2 has countless answers. Aside from those already mentioned, how about V’chol Hachaim. Adir hu, but maybe that’s not slow enough. V’zocher, if you count the opening as a part of the song. Same on V’eineinu Sirena. The old Mimkomcha from Haneshama Lach record. Mikdash Melech. Melech Rachaman. and the list goes on and on.
