Since there isn't an official tier list at the moment, and since mostly everyone likes having a visual aid when teambuilding, I thought that using this thread as a teambuilding resource would come in handy for some people (myself included).
RU Pokemon by usage:
Aerodactyl
Araquanid
Blastoise
Bronzong
Chesnaught
Cloyster
Comfey
Cresselia
Dhelmise
Dianice
Donphan
Doublade
Dragalge
Escavalier
Espeon
Florges
Flygon
Galvantula
Gardevoir
Gigalith
Gligar
Golisopod
Goodra
Heliolisk
Heracross
Honchkrow
Jolteon
Kingdra
Kommo-o
Lycanroc
Mantine
Milotic
Necrozma
Nidoqueen
Porygon2
Registeel
Reuniclus
Rhyperior
Roserade
Rotom-Heat
Shaymin
Slowbro
Stoutland
Swellow
Torkoal
Toxicroak
Tyrantrum
Umbreon
Venusaur
Zoroark
Usable NU Pokemon:
RU Pokemon by usage:
(note: don't read too much into this, criteria for making it on here isn't exactly strict. The purpose of this list is just to make it easier to explore teambuilding options.)
Abomasnow
Bruxish
Cryogonal
Drampa
Drapion
Dugtrio-Alola
Durant
Emboar
Exeggutor-Alola
Ferroseed
Froslass
Glalie-Mega
Granbull
Hoopa
Houndoom
Jellicent
Kabutops
Leafeon
Lurantis
Machamp
Meloetta
Minior
Mismagius
Moltres
Ninetales
Noivern
Omastar
Pangoro
Persian-Alola
Pyukumuku
Qwilfish
Ribombee
Rotom-M
Sableye
Salazzle
Sharpedo
Shedinja
Shiinotic
Shuckle
Sigilyph
Silvally
Slowking
Slurpuff
Sneasel
Snorlax
Steelix
Uxie
Victreebel
Vikavolt
Virizion
Vivillon
Weezing
Whimsicott
Xatu
Yanmega