I've used both the Arlo and Nest cameras - I'm with Nest now in my use context, but yours sounds like a closer fit for the battery powered Arlo Pro stuff.
They're fairly discrete have app / website & should do what you need. I ran into issues with wireless network overlap (as it uses it's own base station rather than your wireless network for the battery cameras) but that might not be an issue for you in a less complicated environment (my Mesh wireless netowrks , sky Q, and some other stuff killed it sometimes).
Nest stuff works better for me for the outdoor stuff, the facial / person recognition cuts down on false alerts.