You should list all the activities that were important to you and/or you spent time on. I would encourage you to get some CS and related activities in your app (seems like game jams and maybe YouTube channel fit in that group?)
When the time comes, college essay guy has good, free information on how to complete the common app activities section. Here’s one resource (there are many articles and videos on his site about activities): 80+ Extracurricular Activity Examples for the Common Application