THREAD.
In analysing the Afghan political spectrum something becomes obvious: Kabul's base is far more diverse than the Taliban's. For simplicity's sake, I'll count stronger opposition toward the Taliban than Kabul as 'pro Kabul'.
Let's assess these generally. Exceptions apply.
A diverse base isn't necessarily, however, a good thing. Appealing to everyone ensures you appeal to no one, or that your support base is so fractured that it actually becomes a liability. Think of Clinton losing the Democrat majority in Congress being a blessing in disguise.
Some pro-Kabul groupings:
1) ethnonationalists of all ethnicities. Whilst the non-Pashtuns amongst them aren't pro-Ghani, they're pro-Kabul as an institution; they see it as far more representative and amenable to their interests than the Taliban.
Some Pashtun nationalists do support the Taliban (majority Pashtun) but these are a minority. The biggest blemishes on the Taliban's Pashtun credentials:
a) The Taliban/Pakistan relationship
b) their overt Islam, which many Pashtun nationalists are hostile toward.
2) The enlightened 'roshan-fikr' demographic
Liberals/seculars. Not much intro needed: progress, freedom, spectacular gains of the last 19 years, women's rights et cetera. You generally notice quite an anti-Islam, wholesale adoption of War on Terror rhetoric in their rationale.