Pathways to permanent residency and family invitation on an E-7 visa

Hi everyone! I’ve been working in Korea on an E-7 visa for several years, and daily life here is already familiar to me. Now I’m thinking more about long-term stability. What options are available for E-7 visa holders who want to apply for permanent residency or invite their family members to live in Korea? I’d love to hear from people who have gone through the process or are preparing for it.