In this question, I have been told the difference between a "melee attack" (which, if I understand correctly, Shoves and Grapples are) and a "melee weapon attack" (which they are not).
A Bugbear's Long Limbed feature gives him 5 feet of extra reach for melee attacks made on his turn.
So, is a Bugbear's Long Limbed reach also applied to special attacks (Shoves & Grapples)?