Wa alaykumsalam wrwb
MashaaAllah, interesting topic! As a child, I "officially" learnt matters of the religion outside of my home. I went to a madrasah and also went to a lady's house who taught us to read arabic. At home, I usually asked my father about origins. Origin of creation. I also asked about God. My mother would be the one who taught/reminded me to recite Sura Al Ikhlas before I go to sleep. I believe that my parents taught me about Islam not by sitting me down and "teaching" it to me, though there were those moments, most of how I learnt is through seeing them simply being muslims, though certain things I had to be specifically taught. I learnt the importance of eating only halal food, washing up after myself..etc.
I personally find it interesting to reflect now, as I still somewhat remember my thoughts from back then. I am reminded of the importance of humility and seeking knowledge. Much of what I have been learning the past few years are what I was taught as a child, however a child's ability to comprehend is different compared to that of an adult's. Unfortunately we have people today who are born muslims but they hardly bother to study about Islam since they already "learnt" it as a child. As a result, their level of knowledge regarding Islam is merely what they remembered/comprehended as a child.
That's my childhood from what I can remember. I know for a fact that there are other kids who had a much more "islamic" childhood than me. In terms of being a muslim adult, it took me a while to really get into the state of being reflective of life.