You got two of the more difficult series to complete there (apart from the very first two):
Gormiti Final Evolution
practically two series in one, the first part is the "Atomic" version of the Energheia (clear parts, gitd paint, etc.)
the second one is a resculpt of the same characters that were on the third series, now they look more menacing and.. pointy.
this series has movable arms and legs, plus a hidden storage inside the body where you can find weapons, masks, or if you ar every lucky, a golden coin.
The gold and silver ones, apart some figures from the Cartoon Series, were released across many products (playsets, school bags, larger action figures) and countries (UK, Italy, Usa, Poland, etc.), even unreleased ones from some HK ebayer too, so it's very hard to track those.
The little one is from a toy bracelet sold in Italy and is uncommon, there are a number of these mini figures and the majority of them is a surprise from a series of kinder-like candy or chips.