Alright, I am looking through standard for cards to play with cherrim.
Here's what I found:
Shedinja VIV
Sandile VIV
Stunfisk VIV?
Lugia VIV
Tsareena DAA
Dracozolt DAA
Vikavolt RCL
Bewear RCL
Maractus SSH
Lanturn SSH (+ Surprise box and yell grunt)
Corviknight SSH
Kartana UNB
Alolan Sandslash GX (accelerate to sandshrew)
Of those, these are the card I think have the most potential with cherrim:
Lugia VIV: Marnie fulfills the attack requirement, Jessie James is still in format too.
Maractus SSH: This is the card most people think of when they try to think of a card to abuse with cherrim
Lanturn SSH: This can be a really nice control style deck. It would win off prizes (the attack does 90) but it is pretty easy (near) infinite paralysis.
Kartana UNB: Imagine
Azul's Kartana deck but with infinite grass energy attachments every turn.