There are two types of CAs you can have on an android device.
- One shipped with the operating system
- One added by the user (you)
The displayed CA is added by you. This one in particular belongs to an app called Packet Capture, that allows you to capture and examine communications on your device. You probably installed it in the past. This is relatively safe, though you may want to remove it once you are done with the app.
The other "weird" certificates were most likely shipped with your phone. The Adnroid OS unfortunately shipps with way too many CAs pre-installed for no good reason as further described here. What I recommend is finding a list of CAs trusted by a major browser, such as Mozilla Firefox and disabling all other CAs. You will most likely not need the others, as you are doing fine without them on your PC/laptop and I also did not notice any problem so far.