LF insight on other PVP clusters other than PVP West?

[Despitebeing-incendius]

There are some discrepancies in your OP about location/servertype/realms:

@Felnarch-stormrage

other than the PvP West ( Ashkandi, Mankrik, Pagle, Westfall, and Windseeker)

the PvP West is a 10-realm Cluster:

@Kaivax

Anathema, Arcanite Reaper, Bigglesworth, Blaumeux, Fairbanks, Kurinnaxx, Rattlegore, Smolderweb, Thunderfury, and Whitemane

the 5-realm Cluster that you mentioned is the PvE East

If you could clarify where you are playing I might be able to give you a better response. In short, the two clusters listed above are the most populated Classic Era clusters in North America region. They both receive free transfers. There are small communities that play in the other NA clusters:

the PvE West

@Kaivax

Atiesh, Azuresong, Myzrael, and Old Blanchy

the PvP East1

@Kaivax

Benediction, Faerlina, Heartseeker, Incendius, and Netherwind

and the PvP East2

@Kaivax

Earthfury, Herod, Kirtonos, Kromcrush, Skeram, Stalagg, Sulfuras, and Thalnos

I myself play Horde with my guildies in the 5-realm cluster of the PvP East1. We are a small but tight-knit community, welcoming new and returning/re-leveling players. Some of us are just hitting 60 for the first time while others are seasoned raiders and PvPers.

I should add that there are also Roleplaying realms and they are not clustered (still queue the same for PvP instances with the rest of NA servers): Bloodsail Buccaneers [hosts the current HC population], Grobbulus [active Ally guild progressing through Naxx: https://us.forums.blizzard.com/en/wow/t/free-yourself-from-the-shackles-of-gdkp/] , and Deviate Delight.