Tree ID - Tree of Heaven lookalike - ?
For the last year I have thought this was a Tree of Heaven - a professional arborist I consulted agreed - my sister has a grove of them and they looked the same to me ...
But I just looked a little closer and thinking we've misidentified it
1) It doesn't smell bad
2) New growth is green
3) Leaves are serrated
It is deciduous - just started leafing out - leaves turned yellow before they dropped.
I've searched through many posts/website and have narrowed it to possibly Sumac, Black Walnut, Butternut - ? My best guess is Black Walnut but wondering if the folks out there agree?
It is a young tree - was maybe 3 feet tall last year in May - now taller than the house - part of why we thought it was ToH....
Here is a picture of the whole tree, bark, leaf structure, and leaf closeup.
We are in Los Angeles.