I recently learned about ignosticism, which is the idea that the notion of god is ambiguous, and then the question of the existence of god(s) is meaningless. That is quite surprising to me since the concept of god had been (and still is) an important topic of discussion in philosophy, studied by Descartes, Pascal, Spinoza, or Bertrand Russel to name a few.
Also, my personal definition is fairly broad: a god is a sentient entity that was responsible (alone or as part of a group of deities) for the creation of the Universe and its physical laws. It can still be intervening on the Universe (through miracles for example) or not. The rules of the Universe most likely don't apply to it.
This last property usually inclines me towards agnosticism.
Hence my question: what are the main definitions of the concept god used in philosophy?