Lens

Panasonic Leica Summilux 15mm f/1.7 ASPH

Used by 1 documented creator on Lensbook
Who uses it
The creators running this lens
Stewart Carroll (Stewart and Alina)
Stewart Carroll (Stewart and Alina)
Talking-head / Travel-vlog & gear teardowns

He calls this 'pretty much the only one we use these days.' On the GH5's 2x crop sensor, 15mm behaves like a 30mm — a classic walk-and-talk vlogging focal length.

Budget alternatives
What creators suggest as the cheaper pick
Panasonic Lumix G 14mm f/2.5 II
Suggested 1× across the documented setups