Myself and nature. Because looking at the "finished" art of others does not bring me the same experience and non-verbal insights as going through the process of a work in progress myself and the feeling of a deep understanding that comes from watching something change or grow or decay also does not come from looking at/consuming the "finished" works of the great masters of the present and of the past.
I do enjoy the art of others more while it is not "finished", watching them create it(which is easily possible nowadays via streaming). Dead artists of the past and their art feels more alive to me in unfinished doodles, sketches and studies and not so much in their epic and carefully planned paintings and sculptures.
End results, "finished" works can be very interesting/stunning/marvelous to look at as well, but the raw and unpolished stuff, the stuff in which the thought and observation process of the artist is visible and where the imperfection of their raw visual memory and imagination, what they can draw without spending hours/days/weeks where they mostly copy from reference, becomes apparent, feels much more alive to me.
So yeah, that's why I pick my "self" as my favorite artist and it is not about quality of results or about ego(of which their might still be some left because ego is really hard to get rid of in a world in which we are conditioned from day zero on to compete rather than to cooperate) but simply because feeling the process(with all the ups and downs) is not possible by looking at "finished" stuff, only by doing it oneself or by experiencing nature itself.
Maybe I'll drop some names of dead and alive artists whose finished works I like later.