I've been happy with this Evecase Holster:
https://www.amazon.com/Evecase-Digital-Professional-Shoulder-Mirrorless/dp/B074KPJXR7 (originally bought it for the Nikon P900.)
I mostly use it for packing up my camera, batteries, charger and a few extra small things to put it in my larger flight carry on cabin bag. So, I wanted it to hold a FEW things for organization, and for maximizing packing space, but I don't have a ton of accessories anyway. When I'm out with the camera, I'm usually wearing it with a Joby Sling and have just a few tiny things like an extra battery and memory card in a purse or just pocket.
It's not too big for just carrying it around, but since the camera is already slung around me, and, like you, I carry very few accessories when out, I find it annoying to ALSO be wearing a case cross body. Not caring how stupid I looked, I did try something the other night when we were heading out to opening night of a European Christmas Market and I was worried about crowds and bumping: I cinched the shoulder strap tight so it would sit around my waist and wore my camera with the Joby strap in such a way that if I put the camera down "at rest" in front of me, it would more or less sit *in* the case at my hip. This way, I could be hands free (for Christmas market hot mulled wine!) and not worry about being bumped, but when shooting, still had the camera strapped around me to worry about it being knocked out of my hands. Like a big, ol' camera fanny pack where the camera mostly "hovers" inside it!
Here's the RX10 iv sitting in it, with the lens hood reversed. There's room for the lens hood in shooting position, but if I'm just transporting it I'll often have the hood reversed. There's plenty of room for the sling strap to fold up in the extra space along the top while still attached, and I have a simple drawstring nylon shoe bag (my emergency rain cover that I can cinch up over the camera while I'm wearing it on the sling) that I put on top of the screen. I do have the divider in use, to create a slim section on the side, and I use a velcro divider from a different bag on the top over where the screen sits, just in case.
Then, I'll mostly just use this in a larger carry on bag so the camera is well protected when we fly, and I don't have to waste counting this minimal bag as an "item" for the plane.
