Hmmm, so many theory choices, like:
Hopeful Monster - instantaneous great individual mutant leaps (lizard born with hair/Goldschmidt)
Punctuated Equilibrium - short rare bursts of rapid multi-species mutations (Cambrian Explosion/Gould)
Gradualism - tiny continuous incremental mutations of every species (Imperceptible/Dawkins)
Panspermia - alien life was transplanted to Earth from beyond (Hoyle/Crick/Hawking)
Theistic Evolution / Old Earth Creationism - Creator used a version of Macro-Evolution
Biblical Creation / Natural Selection is a mechanism designed for created kinds to adapt to diverse habitats
Cosmic Evolution – The origin of information, language, time, space, and matter (Eg: the Big Bang)
Chemical Evolution – The origin of higher elements beyond hydrogen and helium.
Stellar & Planetary Evolution – The origin of the stars and planets.
Organic Evolution – The origin of life from non-life.
Macro Evolution – Changing one Kind into another (Eg: lizard to bird, ape to human, pepper to potato)
Micro Evolution – Natural Selection & Variation within the Kinds (Eg: coloration, stature, hair length)
Here's the theory of evolution I prefer, "If anyone be in Jesus, he is a new creature, a new creation." Trust Jesus's atoning death and resurrection. He died a horrible death, not for what He did, but what we did. Trust Him and you evolve to become something new, someone new.