Hey! Glad you wish to check out Argent Dawn for RP and content! I’d heavily recommend joining the PCU community as it tends to have plenty of good rp events as well as a huge community!
I see you mention dwarf and tauren.
Incase you want to RP a tauren i can recommend hand of conquest! A orc/goblin/troll/tauren grunt guild, Absolutely lovely bunch and enjoyed the events i taken part in with them.
As for dwarf there is the gnome/dwarf guild, Assemblage of Uld. Have not been in this guild myself but rped alongside them and its been great
And feel free to check out the PCU thread as well for other great guilds