Re: Uranus ruling 4th house
Yes, ura and sun are mutually receiving.
I would say that maybe also having ura in the 9th and ruling over your IC would indicate maybe a far away move from your home, such as a move to a foreign country and maybe an erratic or alternative domestic life (maybe a lot of unexpected moving around in foreign places or some unusual living arrangement).
I'd say planets in the 4th would indicate what you felt while you were growing up. Sun and chiron being there would indicate maybe that you were a "star" at home, commanding attention but maybe there were some hurts to deal with at home or some hurt your parents experienced. It might also indicate parents in general. On a personal level, it shows that you truly express your personality at home and that you are somehow introspective with your personality as well as the healing we do in our lifetime.