I use RNG reporter 9.95. I placed 5 forest, 7 peak, and 9 plains, the level is 7 (I used a code to max their levels). Nuzleaf is on Slot 5 and 8 are level 47, Slot 0 was level 38. I removed some to get 2 forest, 2 peak and 3 forest. Now Seedot doesn't appear, but Riolu doesn't either (before it could appear, but not while RNGing.) However, Raticate appears more often and so do Marill and Wooper.