Yes, they rooms listed provide the same function as other larger rooms which are definitely classified as habitable, They're just smaller.
" LIVING " is one of the spaces considered habitable, what you describe are living spaces the answer would be YES these spaces need to meet 1208.
Yes, All habitable spaces are also occupiable spaces. Though that is not the same in reverse. But occupiable spaces that are used for engagement at "labor" and is equipped with means of egress and light and ventilation would be deemed habitable also.
They will need to be made accessible. I think that's the issue is he looking at . . .