Krishnaism is the name of the project but not a definition of the scope.
From the en.wikipedia.org
Krishnaism becomes associated with bhakti yoga in the medieval period.
From the en.wikipedia.org
Krishnaism is one notable instance of Vaishna monotheism popularized in the Bhakti movement.
From the en.wikipedia.org
Krishnaism is more of an academic term.
From the en.wikipedia.org
Krishnaism was adopted much later, and it is for this reason, amongst others, that despite its modern iniquities Shiva has appealed more to the brahmans than Krishna.
From the en.wikipedia.org
More examples
Worship of Krishna the 8th avatar of Vishnu
Krishnaism (also Bhagavatism) is a group of Hindu denominations within Vaishnavism, centered on devotion to Radha Krishna or other forms of Krishna, identified with Vishnu.