7. Alola- The Ultra Beasts are just weird, and I dislike Decidueye and Incineroar. They could have made much cooler designs for those. Some of the other pokemon are pretty nice though.
6. Sinnoh- The lengendaries are good, but otherwise there aren't many memorable pokemon here.
5. Unova- a mixed bunch, some great designs, some awful ones.
4. Johto- nothing much to say here, not the best, not the worst.
3. Hoenn- colourful, striking designs; this gen as a whole had a veryfun, colorful look.
2. Kalos- nearly all of these pokemon are nice designs!
1. Kanto- I have a nostalgic soft spot for the original 151. Nice simple designs, unlike some later gens.