Are there any safe antihistimines safe for closed angle glaucoma? if not, what is the recommendation for severe allergies/sinusitis?

Most are safe: Any medication with any amount of sympathetic/parasympathetic activity will have a disclaimer on the package indicating "do not use in case of glaucoma". If one has the diagnosis of "potential angle closure glaucoma" then that person should already have been treated with a laser iridectomy which prevents the risk. So then all of these drugs are safe.

Newer antihistamine: The older antihistamines such as Benadryl has an anti-cholinergic effect, which is good for drying up the nose, which may aggravate glaucoma. The newer non-sedating antihistamines are mostly devoid of this effect. On the other hand, nasal steroid and/or nasal antihistamine are far more effective and safer for your condition than any oral antihistamine. If symptoms not controlled, see allergist.