I don't think you'd have to be worried about being denied a status match because your status is expiring soon.

That being said, off the top of my head, Turkish and Air Canada offer status matches and challenges--with AC, they explicitly exclude Star Alliance elites from the challenge. With TK, the terms are pretty unclear, but apparently people have been denied a UA - TK match.

There seems to be some scattered reports of EVA granting status matches too.

I'd peruse StatusMatcher | Obtain Elite Travel Status for viable options.