Manitou is not a pet and gains no pet bonuses.
Phantasm is not a pet. It only gained pet bonuses because there was a bug.
Spectres are not pets. The fall under the same category as DH Reign of Vengeance Shadow beasts which are summoned and don’t get pet bonuses.
There’s a blue post here - PTR Starts 2/6 and additional Thoughts - #95 by Apache222-1831
"It’s more that Phantasm (specifically) is treated as a pet, which wasn’t really ever intended, "
They’re finally fixing a bug that’s been around for years.