We need 100% clarification on what traffic will go through the proxy

[humbertoby8212]

Having read the majority of issues/posts in this repo, I understand the following to be true:

1. All first party traffic will not go through the proxy a. i.e. If you visit www.companyurl.com, all of the below example files would receive the originator IP address and not a proxy IP i. www.companyurl.com/image1.png ii. www.companyurl.com/file.js iii. www.companyurl.com/styles.css
2. All third party traffic that is not listed by Google as a cross-site tracking script/tool will not go through the proxy a. i.e. If www.companyurl.com loads a JS file from a third party (www.thirdparty.com/calc.js) that is not listed by Google as a cross-site tracking domain, the third party (www.thirdparty.com) will receive the originator IP address and not a proxy IP
3. Only domains listed by Google will go through the proxy a. There is no plan to send everything through the proxy

Please could you confirm or correct each of the points above so that we are 100% clear.

Please could you also answer the following questions:

1. Is it just cross-site tracking domains that Google plans to send through the proxy?
2. Do Google plan to send other website analytics domains through the proxy that don't partake in cross-site tracking?
3. Do Google have a proposed list of domains that will be added to the proxy list that you can share with us?

I really appreciate you taking the time to clarify my understanding and answer my questions. Thank you