Under open-circuit conditions, does a transformer behave more like a resistor, capacitor, or inductor?
Inductors and transformers are constructed similarly, except that a transformer has multiple windings on the same core and an inductor has only one. If you are only using one winding of a transformer, it will behave exactly as an inductor.

For most transformers, Rc and Xm would be negligible because they represent core losses, which are kept to a minimum to allow the transformer to operate efficiently.

If you neglect those nodes in the circuit, the circuit would become an ideal inductor and a resistor in series. It would behave like a real inductor with some nonzero internal resistance.