Static (ISP) and residential/mobile proxies are two different types of proxies. Each has its own advantages and disadvantages, so it is important to know what they are and which type is suitable for your tasks.
A Residential/mobile proxy, on the other hand, use real IP addresses assigned to homeowners by Internet Service Providers. Because these IP addresses are attached to real, physical devices, using them makes it easy to simulate organic human behavior.
Since Residential proxies are owned by real devices, they are constantly rotating, and the IP pool is updated every day.
A Static proxy differs from a residential/mobile proxy because it does not automatically change IP addresses. A static proxy is more likely to have the same IP address for a long period.