My gear is not a professional one, but I like to shoot with it a lot. I only miss the weather sealing on the camera.
But the first question should be, what IS the BAG. Currently I’m happy with the following two:
Main Backpack
Tenba Fulton V2 16L All Weather
Light Bagpack
Tenba Solstice 10L Sling Bag
Camera
Fujifilm X-S10
Lenses
Fujifilm XF 18-55 F2.4-4 R LM OIS
Fujifilm XF 70-300 F4-5.6 R LM OIS WR
Viltrox AF 13mm F 1.4 XF
7Artisan 60mm F2.8
Adapter
Fujifilm XF 1.4 X TC WR
Tripods
K&F Concept KF-TM2534T
JOBY Gorillapod
PIXI EVO 2-Section Mini Tripod (Mostly with a small light mounted for macro)
Other stuff
PGYTECH Beetle Camera Clip
Peak Design Cuff
Smallrig L Bracket
Rollei Lumis Compact LED