=Indic Philosophies=
Sankhya: Consciousness & matter are separate
Yoga: two can be unified
Nyaya: reality can be figured out using logic
Vaisesika: consciousness is an emergent phenomenon of matter.
Advaita: matter is an emergent phenomenon of consciousness reacting with itself.

Advaita: since the universe is consciousness prajnanam brahman, there can only be one consciousness
Buddhism: all is zero shunyata
Jainism: all is many anekāntavāda
Ajivika: existence is a simulation
Carvaka: everything will die. maximize pleasure. amoralism.

Mimamsa: The ritual is the god. Mimamsa is special. It cannot be argued as a philosophy of reality, but one of dharma and moksha. It does argue that a creator god does not need to exist.