I understand that you require an iPhone to set up the watch, but after that point can’t it be used by itself if it’s cellular? I’m not really worried about any specific connection or features with the phone, I just want to know what I’ll be limited to.
Also, after setup can the information that the watch records be seen on other Apple products that aren’t phones for example an iPad or iMac?
No , no and then no
Read the other replies and believe them as they are correct
If you want an Apple Watch , get an iPhone , if not then get an android watch