In all but name
Definition 1 of 1
Pro Tip 1/3Cultural Variation
The phrase can have different implications in different cultures, reflecting varied formalities around titles and roles. 
In her village, she's the leader in all but name, though they never officially gave her the title.
Pro Tip 2/3Emotional Weight
Using this phrase can imply a sense of injustice or frustration over the lack of formal recognition. 
Though he had been acting captain for years, he was a captain in all but name.
Pro Tip 3/3Unofficial Status
The phrase often hints that while things aren't official, everyone agrees on the reality of the situation. 
Their garden is a park in all but name, with everyone in the neighborhood enjoying it.