M-W:
go-to – 1 (informal): relied on and regularly turned to for expert knowledge, skill, or performance
the company's go-to guy
Brown became the go-to researcher for genetic conundrums.
— Brad Lemley
Nowadays, one running back will get almost all of the carries, one reliever will get nearly all of the saves. And in the NBA, the evidence is mounting that "go-to guys" are scoring an ever greater proportion of the points in any particular game.
— Steve Hirdt
2 (informal): regularly or repeatedly chosen or employed for reliably good results
O'Neal's go-to move has become a soft jump hook, which he can shoot with either hand.
— Chris Ballard
While mozzarella may be the go-to cheese for pizza, … blue cheese … can also be great.
— Sam Gugino
A waitress came by and Reacher ordered his go-to breakfast, which was coffee plus a short stack of pancakes with eggs, bacon, and maple syrup.
— Lee Child
https://www.merriam-webster.com/dictionary/go-to
AHD:
go-to (adj.) 1. Being a player on an athletic team who is relied upon to make important plays, especially in clutch situations: the team's go-to receiver.
2. Being the person or thing most trusted to accomplish a purpose: "the go-to source for on-line hotel reviews" (Susan Stellin).
Collins:
go-to (informal) – 1. (US) (of a person) extremely dependable
He's the go-to guy in the team.
2. (of a place) popularly visited
London's West End has always been the go-to destination for Christmas shopping.
https://www.collinsdictionary.com/dictionary/...
Oxford:
go-to – 1 (North American informal) Denoting a person or thing that may be relied on or is regularly sought out in a particular situation. ...
1.1 (US) Denoting a member of a sports team who can be relied on to score points if given the opportunity.
https://www.lexico.com/en/definition/go-to
