Which items are considered battering items?

Them item Item Hitter Helmet (equip-able to Mega Man) states

1.5x attack power to battering items.

Which items are considered battering items?

No speculation please. I'm looking for either a way to find indications of item type in-game, or an analytical answer.

Solution 1:

You can look it up at the items on the ssbwiki:

• Beam Sword
• Fire bar
• Home-run bat
• Lip's stick
• Ore club
• Star rod
• Hammer
• Golden Hammer

This information may also be found in game. Once Item Switch has been unlocked in the Rules menu, you can check the lower screen for information on the current item you have selected on the top. The item's type is shown, highlighted in orange, next to the item's name.