What rarity are the new weapon skins/weapons?

Basically, which packs should I be buying?

Took me about 13 silver packs and 14 gold packs to get everything. Can be less though depending on unlock order because it doesn’t like to give you 2 weapons in the same pack so it split two packs as half permanent and half RP for me.

I hope the update allows for new unlockables to be available straight away (Seems dumb to question it but faith in halo has been destroyed over the years), Silver packs for uncommon types and gold for above.