Per USDA, Southwick's had 50 Linneaus's in late Sep last year, for whatever that may be worth. They have both species signed per the most recent photos. Very possible the inspector potentially overlooked Hoffmann's if there was a ton of Linneaus's.
That said - I have looked through some USDA and some other documents and as listed here there there are a massive amount of errors in sloth identification. Many zoos are flip-flopped and a fair few even have both.
This is why I didn't look through USDA reports lol. I only used the zoo's websites, social media, news articles, and direct account from other zoochatters to get my information.