No, Tav and Goldson aren’t, but tbf to them, they’re also not surrounded by the character of players that those who you’ve mentioned were surrounded by.
Greig had players like Sandy Jardine and Alex MacDonald beside him.
Butcher had Stevens, Souness, Wilkins, etc
Gough had Stuart McCall, McCoist, Goram, etc.
Ferguson had Moore, McCann, de Boer, etc.
Stick that calibre (talent and mentality) in with those two and you get totally different results.
As leaders there not up to the standard required, but Tav, for example, is still the best, or second best, in the squad.