>>90147525corpse is a strange pick, i don't think she'll ever be as /m/ as much as she's /tg/
the chief english-speaking /m/tuber is probably tsukimi b. dorhnii, she's someone who does plamo streams nearly every week. unfortunately for you, she's a zeek
https://www.twitch.tv/tsukimibdohrniijets is a mecha-themed vtuber that doesn't do mecha content nearly as often, but she has several completed gunpla kits under her belt including the HG dom, hygogg, gundam hmt, and nu gundam
https://www.twitch.tv/jeanfaymasthen there's henemimi, who watched most of the original tomino saga works but is mostly into it for chamuro. i believe she has built the HG qubeley and sazabi model kits
https://www.twitch.tv/henemimithere's also a zenyahima, who's a spacenoid ship commander. she has built the HG char zaku ii and thunderbolt gundam as well as a few Witch from Mercury kits
https://www.twitch.tv/zenyahimapurity valentine built an HG hi-nu gundam but is mostly building various model kits in order to train herself for building a garage kit of her oshi, kiryu coco
https://www.twitch.tv/purityvalentinethen, off the top of my head, there's the metric shitton of chuubas who built a Witch from Mercury model kit when that show was being aired.
of these, picky has watched a bit of gundam before and her favorite mobile suit is the FZ-type zaku
https://www.twitch.tv/pickychannelnegnasu had a close friend who actually worked on Witch from Mercury
https://www.twitch.tv/negnasumaple winters is more into general handcam crafting/art streams, she has built a few of bandai's pokemon models before
https://www.twitch.tv/maplewintersthere's a few chuubas that have been watching mecha shows but haven't done a ton of on-stream content relating to it
recently during her new model showcase, charlotte ursaberra said she was watching OG gundam but had to stop when her favorite anime pirating site went down
https://www.twitch.tv/charlottexbearshimada tiger has watched the three 0079 movies as well as gundam thunderbolt
https://www.twitch.tv/shimadatigerthere's not a lot of teetans enjoyers... sorry anon, your faction's mecha are just really really ugly...