Lens

Sigma 18-35mm f/1.8 DC HSM Art

Used by 1 documented creator on Lensbook
Who uses it
The creators running this lens
Justin Brown
Justin Brown
Talking-head / YouTube setup teacher

His everyday zoom for the talking-head shot, used on the GH5 via a Metabones Speed Booster.

Source: YouTube Studio Tour (Our Full Gear Setup) — Primal Video confirmed
Budget alternatives
What creators suggest as the cheaper pick
Sigma 16mm f/1.4 DC DN
Suggested 1× across the documented setups