Mod Recommendations

The in-game recommendations are quite good, but they consider multiple game modes, not solely PVP, which is a focus of many players. Go with in-game unless the consensus suggests mods that may be better for pvp.

Sources:
 * In-game
 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/star-wars-goh/mods/
 * https://swgoh.gg/mod-meta-report/rank_10/
 * YouTube

Note:
 * Square primary is always offense
 * Diamond primary always defense

First Order Officer

 * https://gaming-fans.com/2017/03/swgoh-best-mods-first-order-officer/

First Order Executioner

 * https://gaming-fans.com/2018/01/swgoh-best-mods-first-order-executioner/
 * https://swgoh.gg/characters/first-order-executioner/data/mods?filter_type=rank_100

Kylo Ren Unmasked

 * https://gaming-fans.com/2017/11/swgoh-best-mods-kylo-ren-unmasked/

First Order Stormtrooper

 * https://gaming-fans.com/2017/02/swgoh-best-mods-for-first-order-stormtrooper/
 * https://swgoh.gg/characters/first-order-stormtrooper/data/mods?filter_type=all

GBA

 * https://gaming-fans.com/2019/07/swgoh-best-mods-for-geonosian-brood-alpha/

JKR

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2018/10/swgoh-best-mods-for-jedi-knight-revan/
 * https://swgoh.gg/characters/jedi-knight-revan/data/mods?filter_type=rank_100

Sets:
 * McMole: Speed, CC: How to Mod and Zeta your Jedi Revan Squad for Arena
 * Speed, CC: How To Mod Jedi Knight Revan Team Guide - 5 Minute Modding
 * RSG How To Mod: Jedi Knight Revan

GMY

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2017/08/swgoh-best-mods-grand-master-yoda/
 * https://swgoh.gg/characters/grand-master-yoda/data/mods?filter_type=rank_100
 * How to mod Grand Master Yoda!

Bastilla Shan

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2018/07/swgoh-best-mods-for-bastila-shan/
 * https://swgoh.gg/characters/bastila-shan/data/mods?filter_type=rank_100

Ezra

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2017/04/swgoh-best-mods-ezra-bridger/
 * https://swgoh.gg/characters/ezra-bridger/data/mods?filter_type=rank_100

Jolee

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2018/07/swgoh-best-mods-for-jolee-bindo/
 * https://swgoh.gg/characters/jolee-bindo/data/mods?filter_type=rank_100

JKA

 * https://apps.crouchingrancor.com/Mods/Advisor
 * https://gaming-fans.com/2017/09/swgoh-best-mods-jedi-knight-anakin/
 * https://swgoh.gg/characters/jedi-knight-anakin/data/mods?filter_type=rank_100