So I went a different way. I used the i-os launcher weight and RL as bombs guideline. The i-os launcher is tech C, which is why I used it for my tech C external hardpoint missiles.
Sidewinder?-(under the hood its a .5 ton i-OS SRM2). 1 bomb slot, 3 damage, 3/6/9 range, (short per normal aerospace range bands). Can be heat seeking or normal guidance or even harpoon, per normal SRM. Harpoon is fun to reel in cargo, you do a little damage to it but its faster then collecting it EVA.
Phoenix?-(under the hood its a 1.5 ton i-0S LRM5). 3 bomb slots, 3 damage, 7/14/21 range, (long per normal aerospace range bands).
The RL10 at 6 damage, medium range, 1 bomb slot feels like the Sparrow/Sea Sparrow to me, a mostly anti-bomber (antidropship?) weapon due to the inaccuracy and lower tech but higher damage compared to the i-OS srm2 'sidewinder'.
The Advanced medium range missile is thus the existing tech E LAA, 2 bomb slots 6 damage medium aerospace range band. It replaces the RL10/Sparrow in anti-air roles, being more accurate but also more bulky, while leaving the RL10 for antishipping/heavy bomber duties if you want max damage without the accuracy penalty striking small ground targets.
Of course the AA Arrow is 5 bomb slots and 20 damage at medium range, and feels more like an upscaled Harpoon medium range antidropship missile with that damage, to the Tomahawk-like ASM at 6 slots, long range, and 30 damage.
For critique on your missiles, the LRM-XL-S is medium range, 10 damage, with a bonus to hit. Compared to the 6 damage, Tech E, also 2 slot LAA, your missile is 'too good' compared to existing options. Same with the M, 5 slots, same as the AA arrow, but 30 damage instead of 20, at tech C instead of the AA arrow tech E.