Crown
¯\_(ツ)_/¯
Moved to the recording / editing / production / software / hardware forum. 
I watch a lot of that type of video from cities that I like (Paris, London, NYC) and I always wondered how they filmed them. On one of the channels I watch with really good quality, the guy filming it passed in front of a very shiny window and you could see his reflection and I could see he was using a handheld gimbal stabilizer that he was simply holding in fornt of him at about chest height. He was holding it in one hand so it must have been quite light so I doubt it was a DSLR camera. It looked like some sort of a compact camera. So not sure for the camera but you'll definitely need a stabilizer.
I watch a lot of that type of video from cities that I like (Paris, London, NYC) and I always wondered how they filmed them. On one of the channels I watch with really good quality, the guy filming it passed in front of a very shiny window and you could see his reflection and I could see he was using a handheld gimbal stabilizer that he was simply holding in fornt of him at about chest height. He was holding it in one hand so it must have been quite light so I doubt it was a DSLR camera. It looked like some sort of a compact camera. So not sure for the camera but you'll definitely need a stabilizer.
Vedstedsen
Globus Travellus
From small to big.
1. DJI Osmo Pocket
2. Action Cam with gimbal
3. Phone with gimbal
4. 4/3 with gimbal (Lumix G7 / G85 series as an example)
5. Full DSLR with gimbal
If you don't want too much attention, go with 1 or 2.
If you have a small budget, but already a good phone, go with 3.
If you want best quality go with 4 or 5. (5 for nighttime).
1. DJI Osmo Pocket
2. Action Cam with gimbal
3. Phone with gimbal
4. 4/3 with gimbal (Lumix G7 / G85 series as an example)
5. Full DSLR with gimbal
If you don't want too much attention, go with 1 or 2.
If you have a small budget, but already a good phone, go with 3.
If you want best quality go with 4 or 5. (5 for nighttime).
mirrorlessNY(youtuber)
I Love YTtalk
phone sounds like the least expansive, while DJI Osmo Pocket is probably the best for daylight videos & portability
personally I use Sony a6600 with pancake 20mm for compact vlogging, with a bluetooth grip trigger handle mini tripod, definitely not pocket friendly or very stable, but it depends what quality & capability you want from a camera, like sharp 4k, possibility of lens changes, bokeh, low light performance, mic port etc......