My highest level is currently Faust the Houndoom at Level 24 (I know, no where near the big guns, but I'm still very proud to have raised him from a Houndour! )
This is probably the last post I will make in this thread for a while - largely because the record will not be passed or enhanced any time soon - but my Kingdra, Coral, has now reached Level 50, and will remain as the highest-leveled thing I own for...probably forever.
Faust the Houndoom and Shiron the Alolan Ninetales are both level 35 now! Hooray for them learning the super strong moves!
My Larvitar is steadily making its way through the 40s right now. Almost at 44! Now the real question is should I evolve it at 55 or let it go all the way to 100...
I have a level 40 Moltres Too busy evolving Eevees at the moment to try for 100 with any Pokémon, though.
Don't go higher, 101+ is unintended and supposed to be patched out in a later update. But then again, you probably knew that already.
My Dratini is now the highest level mon I have, as it has surpassed my lv56 Tyranitar by being lv58 as of now.
Highest is still the level 125 Pikachu but I also crossed 100 (by accident this time) on my Glalie. It is at 101.