For the porch light issue, if you’re ok with it not integrating with SmartThings I’ve been really happy with the Kuna light, which combines a motion sensor, wifi camera, two way audio intercom, and porch light all in one. You can put the light on a schedule or have it come on when motion is detected. We’ve had ours since last summer and really like it.
More discussion of video doorbells and the Kuna: