There's no super easy armour building tools yet (but I also don't need one yet), but here're some things I've found.

• Monster Hunter Rise Armorset search
• Monster Hunter Rise Database
• Monster Hunter Rise Wiki - Mostly I keep the Large Monsters page in a tab on my phone to get to info. on weaknesses and things.

• The design of the rampage and Kamura hunting horns is based on the Ninja Naruko (忍者の鳴子), a board with chimes that would be suspended from ropes to act as a kind of alarm.

• Monster Hunter