Welcome to the RPC!
As Zhavi said, Balmung and Gilgamesh are probably the two biggest RP servers. Because they also have large player populations in general, though, getting in can be a little difficult sometimes. Usually early mornings on weekdays (assuming Pacific <-> Eastern American times) gives the highest chance, followed by right before/after a maintenance.
There are some other servers wih RPers on them, but I do not know much about them, unfortunately. What I can say is that Balmung is typically focused on open-world walkup RP in public, while Gilgamesh is more Free Company (guild) based communication. You can still find both on both!
As Zhavi said, Balmung and Gilgamesh are probably the two biggest RP servers. Because they also have large player populations in general, though, getting in can be a little difficult sometimes. Usually early mornings on weekdays (assuming Pacific <-> Eastern American times) gives the highest chance, followed by right before/after a maintenance.
There are some other servers wih RPers on them, but I do not know much about them, unfortunately. What I can say is that Balmung is typically focused on open-world walkup RP in public, while Gilgamesh is more Free Company (guild) based communication. You can still find both on both!