Analysis of information sources in references of the Wikipedia article "Cheesecake" in English language version.
Some consider baked cheesecake a cake, some a tart, some even a custard pie. Alan Davidson weighs in on the side of cheesecake being a tart, "a flat, baked item consisting of a base of pastry, or occasionally some other flour preparation, with a sweet or savoury topping not covered with a pastry lid".
cheesecake: A flan or tart filled with curd or cream cheese.