In most instances, knowing the precise botanical name matters mostly to botanists. Plants that are closely related often have similar care requirements, but not always. Once you have properly identified a plant, what matters is providing proper light and water.
All of yours are Pothos, not Philodendron. These two are often confused. As a general rule, Pothos have larger, thicker leaves and stems than Philodendron oxycardium. Pothos grow faster and are more hardy then Philodendron. Philodendron has darker green leaves and is rarely variegated as Pothos is. Their light and water requirements are very much the same.
