Could someone help me by naming tenses and uses:
He could well be right, since German newspapers were full of praise for the $15m musical. The tabloid Bild exclaimed, "Rocky knocks Hamburg out", while headlines in the local press dubbed the musical "a triumph" and declared: "Big emotions, big theatre".
Directed by Alex Timbers, who is leading workshops on the recently reported Jeff Buckley musical The Last Goodbye, Rocky has a score by Lynn Ahrens and Stephen Flaherty and a book by Thomas Meehan.
Here are my suggestions:
could be: modal auxiliary verb, because it's a kind of a chance/prohability - is he right?
were: Past Tense Simple, because it's a finished action they were full, but they aren't now.
exclaimed: Past Tense Simple, Statement in the Past
knocks: It's a quotation now, Present Tense simple, because it's a general statement
dubbed: is used as a Past Participle?
declared: Past Participle?
Directed by: Past Participle?
is leading: Present Tense Progressive, because it's a permanent event - he is leading workshops
has: Present Tense Simple, that's a general statement