What Are the Elven Realms in The Lord of the Rings?

The Elves are the most powerful of the Free Peoples of Middle-earth in The Lord of the Rings, but Peter Jackson's movies only show us a glimpse of their glorious realms. Prime Video's The Lord of the Rings: The Rings of Power expands on that a little, but it's still a fraction of what the Elves once were. However, J.R.R. Tolkienleft a whole bibliography depicting their saga until the War of the Ring in the Third Age, showing us their many realms throughout the ages. It's in The Silmarillion and Unfinished Tales that these are developed in depth, and it's surprising how numerous the Elven realms once were.