First things that would need to be considered, would be for weapon system.
Short range turret or long range.
Short range launcher or long range.
Ship being used
Like everyone has said way too many possibilities.
You need to narrow down your question.
To help out, Triglavian disintegrators i use only 3 ammo types for specific reasons, and don’t even look at the other two.
Meson T1 ammo for long range sniper. Yes mystic t2 ammo does better damage, but meson will normal have already spooled up to and pass mystic start damage by the time target gets to mystic ammo range and you’ll have already done a lot of damage.
Tetryon T1 ammo for medium to close range, has high starting damage, no tracking loose and normally anything outside its range is a fast kiter or range focused and meson can handle them at range.
Occult T2 ammo is your heavy hitting ammo, has the highest damage starting point, but has reduced tracking and shortest range. Use against large slow movers, tackled targets or structures.
The other two ammo types fall in between these three ammo.
Mystic T2 ammo is second longest capable ammo, but has reduced tracking and marginal better damage than Baryon ammo.
Baryon t1 ammo is you middle ground ammo/average ammo in range and damage. Like mystic, meson out ranges it and thus can get to better damage before target gets with in range. And Tetryon and Occult do higher damage as they spool up.
There you go that one turret set.