The phrase "arguably called" is correct and usable in written English.
It can be used when you want to express that something can be considered or claimed to be a certain way, but there may be differing opinions on that classification.
Example: "This painting is arguably called a masterpiece, though some critics disagree."
Alternatives: "possibly referred to as" or "potentially named".
The vast venue arguably called for a spectacle of Mandela's life involving music, dance and archive footage on the scale of an Olympic opening ceremony.
Although informal interest in what can be arguably called aspects of deontic logic continued, the trend toward studying logic using the symbolic and exact techniques of mathematics became dominant in the twentieth century, and logic became largely, symbolic logic.
Her occasional nudging of Oliver to kill when a situation arguably called for death?
This order was appropriate because the letter arguably called for civil disobedience.
The U.S. had looked to have scored the winner in the 85 minute, but Eddie Johnson was arguably called offsides after slipping behind Mexico's defense and putting the ball in the net.
This, arguably calls for the further improvement of downscaling techniques in order to generate climate data more relevant and useful for hydrological applications such as in design hydrology.
In the twenty-first century, the nature of leisure and recreational activities are very different from those in the Victorian age: many are not dependent on the outdoor environment, which arguably calls into question the relevance of the public park.
Arguably, calling women "crazy" is the most commonly-used strategy for stereotyping and devaluing us.
I have arrived in this dusty, petite town, to pour my desperation into the man some arguably call the world's best healer.
His very strong opinions against religion I believe came from what one could arguably call an almost spiritual place -- he wanted the truth so badly, he would accept nothing that his mind could not spot smacked of counterfeit.
Each of these associations might arguably call for somewhat different policy responses.
