Origin mark - Bulbapedia, the community-driven Pokémon encyclopedia

I made a simple type effectiveness chart. For each type, the types that are super effective against it are shown as small symbols above the main symbol. I find this helpful, so

Create a Pokémon Type Symbols Tier List - TierMaker

Guide to Rarity Symbols - Pokemon.com

I also made a type chart, this one with the Pokémon Go symbols for

Easy read super effective type chart. Just the attacks. : r/TheSilphRoad

Symbol type chart - vertical format for mobile devices

I made a type chart

Play Pokemon like a Data Scientist - Part 2: Strengths and Weaknesses, by Lukas Schaub

Pokemon Sword and Shield Battle Academy #3 - Pokemon Type Chart and Pokemon Type Matchups

A Pokémon Trainer is You! XL: Fey Realms – Pokémaniacal