If I only can choose from the list, the first plant resembles Rudbeckia Goldsturm most. Anything can eat the leaves, from snails through slugs to insects.The second plant looks a little like an Agastache.

Thanks for the help. I assume that photos are from something on the list because there area was completely bare before I planted the stuff from the box. There werent any weeds or anything. Just dirt.

Check to see if any of the stems are square instead of round. Agastache & monarda/bee balm are in the mint family and have square stems. Leaves in photo #3 (your question #2) look like monarda/bee balm.

Sprinkle crushed eggshells around newly-planted perennials. The slugs won't crawl over them because the shells cut them. The eggshells also feed the soil as they decompose. Can't help with flying marauders but I do know ways to discourage the slithering kind.

Try to rub a leaf of the plant #2 with your fingers. If it smells similar to mint then it is an Agastache. If it smells more like a lemon, than it is a Monarda.

Gosh, you gals and guys are so smart!!! The stems are indeed square and it smells like lemon. So, I will assume it is Monarda Raspberry Wine. Besides, the Agastache Honey Bee Blue is blooming somewhere else in my little patch of land right now.
Thanks!

Any idease about the last photo?

First one is echinacea. Last one is origanum.

Also very effective for slugs and organic as well are Sluggo and Escar-Go.

A thin layer of sand will discourage snails.