You mentioned that you're thinking 200D, so I assume your budget is around 450-600 for camera + cheap-ish (possibly kit) lens. A lot of newer YouTube creators fixate on equipment, but content and substance will outweigh production quality 9 out of 10 times. I used to vlog with a cheap and old Lumix LX3 back in 2014/15 and managed to get around 20k subs. That camera cost me $90 off eBay!
Today my main vlogging camera is still the Canon GX7. It's an older model (September 2014). But the quality is still very good @ 1080P, it is one of a few cameras where the LCD can flip out completely, AND it's extremely lightweight and portable. I also have a Canon 70D but it is so heavy that I only use it to vlog when I'm in my home studio. I rarely bring it outside (where I do about ~70% of my vlogging). Biggest downside is that there is no external mic. But you can fix this by using an external mic like the Tascam (entry level model) and syncing in post (slight inconvenience, GREAT sound quality). I only use the Tascam to record occasional narration, otherwise I use music anyway.
If you do most of your shooting indoors in a studio or controlled environment, then I would recommend a DSLR. Canon SL2 (200D) is preferable IMO because it's still lightweight enough in case you want to bring it as a portable vlog camera. It also has an external mic input which you don't NEED, but you should definitely WANT if you need higher quality video.