Hiruzen and Konoha clan stuff
Hiruzen share a trait with the Inzuka Clan as we seen here:
He used his nose to counter Hashirama's Darkness Genjutsu.
And from what we see here, Hashirama and Tobirama were touched by water, which probably erased some scent.
And correct my if I am wrong, I don't think Edo Tensei bodies have any scent.
In canon, Hiruzen is the only non-Inzuka who actually uses his nose. <-(correct me if I'm wrong)
Anyways, from what we see here, Hiruzen has a really strong sense of smell much like the Inzuka clan to be able to smell with hardly any scent. So my conclusion is that it really is possible for Hiruzen to have known the other clan specialties. Such as Shadows, Giant transformation, Mind Manipulation, epic Uchiha Katon etc. But obviously not the Haruno clan.
Either that, or he is part monkey.
Just imagine a Giant Hiruzen with giant Katon and giant shadows