IP Address for different region

Global Accelerator is a global service and the static IP addresses you get with any accelerator are advertised from AWS Points of Presence (POPs) around the world. In the list of IP ranges that you shared, the entries that include "region": "GLOBAL" refer to those static IP addresses.

If you want to filter for traffic through your accelerator that come from POPs in one area, you can filter for entries that include a specific geographical area, such as us-** or eu-**. So, for example, if you filter for "region": "eu-*", you will see only traffic coming through POPs in Europe.

OK, so just to confirm any static IPs assigned to a Global Accelerator will be from the GLOBAL, GLOBALACCELERATOR ip ranges? All of these ranges, when doing a GeoIP lookup, "appear" to be in Seattle, WA.

When hosting a UK website, one with a UK IP address will rank higher than one with a US IP address, all other things being equal(!).

So if use a GA then it will "appear" that my base of operations is always Seattle? Not from my home AWS region?

That's correct. All the ip ranges with entries that include "region": "GLOBAL" and "service": "GLOBALACCELERATOR" are advertised from edge locations around the world, but the GeoIP lookup shows them in the US.