Oh hello, are we still talking about this? Because immortals are absolutely my jam. Gods are my typical go-to, as seen in my Lessons Learned the Hard Way urban fantasy series. The first book just updated today and features two several-millennia-old gods, with many more on the way, but there are plenty of other immortal creatures too.
Elves also feature prominently in my BL fantasy romance The Prince's Garden (updating later today). They're not quite immortal, but they do live for hundreds of years (and have kind of fucked up memory/time perception because of it).