PoE Camera Recommendation for Small Business (Take 2)

(The post failed to upload the first time for whatever reason, so I am trying again. If this post appears twice... my bad.)

I don't know if I should make this post in this subreddit or r/homesecurity, but seeing as this is for a business, I decided this subreddit would be better.

Before anyone asks for a background, I will give some backstory before getting into the meat of the post. We are a budding business, and as such, don't have a lot of the typical job positions. As the only IT guy, I am effectively in charge of networking, computer repair, IoT devices, and everything else. However, I'm not a professional, so I have been reaching out to people in these areas on advice on how to run things for now.

All of that to say: We are in the process of expanding our network ability, and want to improve on security as well. We have the typical older ethernet cameras that have mediocre quality, but since we need to cover another angle with a camera, we may as well use the open PoE ports on our switch. The switch can supply 30 watts and supports gigabit connections (although I don't know if that matters, I included it anyway). The location to cover is a small foyer that you enter from the main door. We're thinking about putting it in the corner of the room, about a 45 degree angle to the door. The door is also glass, so we would like the camera to be high enough quality to be able to see there are people say... on the porch before the door.

What cameras would you guys recommend we look into? Unless its required for the above requests, we don't really need the camera to be 4K UHD. Since it is a camera watching the main entrance, should it be able to PTZ as well? Also, although price isn't much of an issue, please don't recommend a $1500 camera if there's a $300 one that would be good enough.

Any advice on camera networks would be appreciated, even if it isn't a direct camera recommendation. Thank you for your time!