There is another D-Class suit out there, but I wanted to make one that's more faithful to the Lethal Company design language while also remaining faithful to SCP: Containment Breach's D-Class. Even the orange base is color-matched to the original game!
This suit goes perfectly with other SCP-related mods, such as:
-SCPFoundationDungeon by Badham_Mods
https://thunderstore.io/c/lethal-company/p/Badham_Mods/SCPFoundationDungeon/
-SecretLabs by Zingar
https://thunderstore.io/c/lethal-company/p/Zingar/SecretLabs/
-SCP Foundation Suit by TeamClark
https://thunderstore.io/c/lethal-company/p/TeamClark/SCP_Foundation_Suit/