I rent this home, my first summer here. Im also very new to gardening. I have these plants growing in the yard and i have no idea what they are. I'll attach two pictures for reference. I live on Long Island and these plants are growing next to the house on the south side.
Daylily for sure. They look overgrown and need thinning.
They are a good foundation plant and often used for color at office buildings with other shrubs etc in landscape design.
My guess is they are yellow.