Hi. Just thought that this Tierlist would be a useful reference for anybody looking to quickly raise Pokemon after defeating an opponent in battle. I thought I might do the most recent game first. Any errors on the table let me know. I did take quite a while to complete this though, so if you have any suggestions for other games please be patient. The Black box was supposed to read 'Erratic'.
The following levels are where a certain category can be raised the fastest:
Lv. 1-10 Fluctuating (Only one here :P, so Medium Slow is more reliable)
Lv. 11-29 Medium Slow
Lv. 30-71 Fast
Lv. 71-100 Erratic (Erratic and Fast have the same Exp. when leveled up to 71)