For a long time before Update 102, Twitch & Houston shared the same UV/Textures. After Update 102 they still did but Twitch was a jumbled mess, I dont remember what update fixed that issue but now Twitch has his own UV/Texture. Which after a long time I finally found out how to edit
He still uses the old UVs from the Pre-102 models so if youve done texture edits with those these should easy to do compared to the other ones
In the screenshots I used 3 different old Pre-102 model textures to see them in action: