There’s no UR card that gives 3x or better on groceries 12 months a year.
As other’s mentioned,
Citi Custom Cash is 5x TYP up to $500 a month for no AF.
Citi Premier is 3x TYP no limit for $95 AF
AMEX Gold 4x up to $25k/yr $250 AF and assorted dining/Uber credits
AMEX EDP 4.5x up to $6k/yr $95 AF
US Bank AR 3x (4.5%) with mobile wallet $400 AF and $325 annual credits + other goodies
If UR are your thing and you have some extra cash, you could get a bunch of Freedoms and stock up on grocery store gift cards when it is a 5x category. I bought $1000s of grocery store gift cards during the AMEX Platinum 10x grocery SUB to max out the $15k limit in time.