I'm sure Polish because OCA's primate is named during the services with our Metropolite. On orthodoxwiki there's written that OCA is also recognised by Moscow, Bulgaria, Georgia, and the Czech Lands and Slovakia Churches.
Christianity in the USA seems "messy" for a foreigner. More or less 15 canonical jurisdictions, one of them is not recognized by some other Churches, but clergy pray together and there's intercommunion. There SCOBA, which gathers about half of the canonical jurisdictions, but there are some out of it. How can You stand this?