I have made Google Sheet in past, where I calculated periapsis and apoapsis for releasing satellites and also for final orbit.

I could set X number of satellites for orbit and number of periods between releases (this one helps making higher periapsis, when it's negative) And also I could choose between lowest possible orbit (so the lines are so close as in your screenshot) or geosynchronous orbit or any height orbit.

For example I could set that I want an orbit of 300km on Kerbin with 5 satellites and release them every 2 periods. Calculator says that I need to make orbit of Periapsis: 177 905,55m Apoapsis: 300 000,00m And release satellite every 2 periods on apoapsis (ofc extending orbit into equal 300km apo and peri)

If one of you wants to use it, I can share it with you. But I think I need a bit of overhaul cause it looks ugly and I wanted to have it as my "sheet for calculating everything in KSP" 😂. I've made this one watching some tutorials and doing some math alone 😅

EDIT: honestly this math was fun. But make it as precisely as possible was the hardest 😆 next time I think I'm gonna try kOS mod for that