https://www.twitch.tv/nubbi_/clip/SavoryHandsomeSandpiperMVGame-uD6PxLPFcsix36AC

https://clips.twitch.tv/WonderfulRamshackleDurianOMGScoots-84Ed1xQDtMLvSCQA

So Rival 5 is a big ambi mouse, there is Steelseries Aerox 5, which has the exact same shape and button placement with lighter weight, the switches and sensor are the same tho.
I also recommend the logi superlight, but its shape is a bit different when you palm it, the back end will against the center of the palm because its shape is more ball-like, and it's a flatter mouse, so the center palm to the end of middle finger area may not contact the mouse if you're using superlight.

As for big ergo mice, both ec1-c and DAV3 are good, but I'll wait till Pulsar release their xlite v3 size 1

https://www.teamfortress.tv/8247/show-your-hud-modifications/?page=192#5748

made by leth, surface edit

https://clips.twitch.tv/HelplessArtsyEmuUncleNox-FxL3abLZO7vcW-dg

go Taiwan!

ZONAhud

it looks like m0rehud and just drags a lot of files from the other huds into it, the scoreboard/font is from the old flawhud, and the buff color is probably from hudas iscariotte.

I think you need to ask okie for the hud itself

that is outline/crosshair013 in kenny crosshair
https://www.dropbox.com/s/xc5hst00lvxpauf/kennyxhair.zip?dl=0

You know you can just...ask him.

https://clips.twitch.tv/LightUninterestedOxHoneyBadger-ve7-l4HczpoOVpgY

https://clips.twitch.tv/GenerousTemperedAlbatrossPeteZaroll-xdSaG3IM_lamL-JB

That's collyhud not uwui https://www.teamfortress.tv/48176/collyhud

That's Leth's edit version of arekk hud https://www.teamfortress.tv/post/983131/show-your-hud-modifications

https://clips.twitch.tv/BusyPeacefulElkVoHiYo-TrL6UphJm6GFoEBB