1, 3, 4, 6, 7 are short-form passive participles.
2, 5 are long-form passive participle.
Passive participles can occur in the short-form and the long-form.
Short-form passive participles are used in nominal predication (with the verb быть, copula or zero-copula) and can appear only in the nominative case:
https://ru.wikipedia.org/wiki/%D0%A1%D0%BA%D0%B0%D0%B7%D1%83%D0%B5%D0%BC%D0%BE%D0%B5#%D0%A1%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BD%D0%BE%D0%B5_%D0%B8%D0%BC%D0%B5%D0%BD%D0%BD%D0%BE%D0%B5_%D1%81%D0%BA%D0%B0%D0%B7%D1%83%D0%B5%D0%BC%D0%BE%D0%B5
( example 6 )
Long-form passive participle, like adjectives, modify nouns and are usually used in attributive/depictive constructions.