Windows, Linux, ChromeOS, etc. all have a keyboard layout called US International, which turns the right Alt key into a modifer that lets you type common symbols from European languages, as well as adding various dead keys.
Is there any way to use this keyboard layout on a Mac? Macs do have a layout called "U.S. International - PC", but despite the name, it doesn't match the keyboard layout used on other OSes. It makes " and ' combine with certain letters but otherwise doesn't appear to change anything at all and in particular, holding the right Alt key doesn't work.
I don't want to have to memorize a whole different keyboard layout just for Macs, or hold each key and wait for a popup or whatever.
The Alt level of Windows US International, which I am used to looks like this:
But the same level on Apple's US International PC is a lot different and looks like this: