The Mining Guild was first mentioned by Princess Leia to Lando Calrissian in Star Wars: Episode V - The Empire Strikes Back (1980).
Kanan's Stormtrooper helmet redecorated by Sabine has a stylized Loth-cat face on it.
WILHELM SCREAM: yelled by Rodian miner who is force pushed off the landing platform by Ezra.
The yellow Mining Guild Tie Fighters each have the front notch cut out of their stabilizer wings. This gives their pilot a better view but makes the fighter less suitable for combat.
The character design for Mining Guild Boss Yushin is based on a sketch by Ralph McQuarrie' of a bounty hunter created for Star Wars: Episode V - The Empire Strikes Back (1980). This alien was originally designed in 2012 for a Clone Wars arc that remained unproduced when the series was canceled, but was eventually revived and finished to be broadcast on Disney+ as Gone with a Trace (2020). The 2021 version of the Clone Wars Character Encyclopedia identifies this species as a "Moyn", named after Bobby Moynihan, who voiced the one who appeared in the Clone Wars.