Chlorine wont read as ammonia. Chloramine is chemically bonded chlorine and ammonia so that will be an ammonia source. Water conditioner will break the bond in the chloramine and release the chlorine and ammonia into the water, your water conditioner will then treat the chlorine leaving the ammonia which will cycle out in a cycled tank.
Chloramine won't degas in the same way that chlorine will. You always need to treat water going into your tank with water conditioner if your water is treated with either chlorine or chloramine. You havent been doing that? I would recommend seachem prime as a water conditioner if your water is chloramine treated as this will also detoxify the ammonia released for a short period of time until your cycle removes it.
Back to my first post. Is your filter sufficiently sized for your aquarium size?
Really, if you have been going since August with a fishless cycle, 100% water change, let the tank run for a day or so, get a couple of small fish, monitor water conditions, see where you are.