Hi, @resphichen !
Katy here from Shopify. I hope all is well with you, and welcome to our Community here.
Thanks so much for providing as much context as you have, this is super helpful.
I understand that you are using Shopify Payments. Do you have Google Pay Dynamic checkout linked with this by any chance? On stores that have Google Pay dynamic checkout enabled, this will then display an extra Analytics tag on the pages with the Google Pay button - which seems to be in line with the tracked pages you have listed. To date this has been appearing as UA-116858069-1 (though this may change in future).
If you do have Google Pay enabled this is likely the cause, in which case this tag is contained within the Google Pay checkout button's iframe and will not affect any tracking on your store.
Do have check in with your developers to see. If you need a hand or have any questions feel free to let me know.
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