A creature
They can only be seen through particles, tall flowers and farm plants can slowly reveal them
Another creature
This one may or may not like being looked
The one in the logo
None of them have names
Totem holder
The blue skulls indicate that when killed, this creature drops a totem
All of the totems
Each one of them gives a specific attribute
Foods
These are all of the available food items, yes, sugar can be consumed
New armor and tools
In addition to them, there are more tiers: wooden, stone, copper (+ lapis), iron (+ emerald), gold (+ redstone), diamond (+ quartz and netherite)
Anvils and rails are now made out of copper
The reason is to make them more accessible and give copper more uses. Also, the minecart speed has been more than doubled
New ores and cobweb
They are: Prismarine (found in the Nether, needs diamond tier) Cobweb (quite common in nests) Nest rock (found in nests, needs gold tier) Dense and tiny variants of ores, plus 2 new ores
Other items
They may help you in your path, and I'm tired of writing descriptions
