I'd say that, at least with Tibetan Buddhism, there are things like deity yoga, wrathful and peaceful manifestations, Dakinis and Dharma protectors, Bodhisattva

I'd say that, at least with Tibetan Buddhism, there are things like deity yoga, wrathful and peaceful manifestations, Dakinis and Dharma protectors, Bodhisattvas, all are essentially theistic in nature. Adi-Buddha in the Vajrayana tradition is also a "primordial" Buddha, so it has many of the hallmarks of theistic religion.