yeah, at least a couple of the first pictures are nightshade, a toxic weed.
The last one is Italian arum. Not a plant I am real fond of and spreads readily, but people like it because it grows readily in shade. It is planted as a decorative plant for its variegated foliage and red berries:
https://carolynsshadegardensdotcom.files ... cn1917.jpg
https://namethatplant.files.wordpress.co ... rk_145.jpg
Also note all parts of this plant are toxic. If you have a toddler that would be tempted to put those pretty berries in her mouth or a cat that likes to chew on leaves, I would get rid of it.