Tagged the characters in the bottom half of the image, finishing with the row of characters above Meta Knight. Those I skipped over:

• The chick and chicken, probably either Tookey & Twizzy or Piyo & Keko.
• The purple bird with the party hat, goggles, and bag between Ice Dragon and Orbservor. I haven't found it from searching any related terms on WiKirby.
• The Pep Brew and Point Star objects, which don't have tags.

edit: Tagged Tookey and Twizzy, and the rest of the characters except the purple bird.

edit 2: The purple bird is also in post #5309859.

Purple bird is Nori from Kirby Mass Attack. WiKirby calls it Nolly, but since it seems to come from a Japanese word, I used Danbooru's standard romanization.