Production: Khazad, Luchuirp, Calabim, Infernal
Research: Lanun, Luchuirp, Svartalfar/Ljosalfar.
For Khazad, focus on gold early on so you can max out your vaults(500 gold/city). This gives you a 40% production bonus in all of them. Build mines everywhere. Luchuirp will want to place as many cities as they can, the use Blessing of Nanosuelta to dump all the golden hammers in a single city. Calabim focus on maxing out population, to get the +1 hammer from unhappiness. Infernal don't need food, so just spam mines/workshops everywhere.
For research, have Lanun grab all the coastal land they can and mass-produce Pirate Coves. Luchruip use a similar strategy to production, but will be using their Great Engineers to build research-heavy wonders. Svartalfar and Ljosalfar build cottages everywhere, and switch to Fellowship of Leaves to get Ancient Forests on your cottages.