Yeezus is abrasive and emotional. One of my favorite of his albums but maybe not a good place to start. Pablo is best understood as thoroughly a product of its time (mid-late 2016). Ignore the controversies following its release. You may be best served starting with The College Dropout and tracing his development, but it really depends on your taste. TCD and Late Registration are the old, chop up the soul Kanye. By Graduation he was moving into a more electronic production style, but still mostly just rapping over beats. With 808s and Heartbreak he moved into a new place (for him and for hip hop) of this weird r&b fusion thing exploring his feelings of loss following the death of his mother and the end of a relationship. Not much rap. MBDTF is widely considered one of the greatest albums of all time; again you'll find mostly singing, but this time over really maximalist production. I'm not as familiar with Watch the Throne.