I really liked the inquisitor as a stand-in for a Templar.
I’m re-reading the abilities in the 2e original boxed set and there are a lot of abilities that involve accusing an enemy to send them off to imprisonment. It seems to play out one of these scenarios there will always be the potential of immediate combat involved.
I think with the right inquisitor archetype and abilities selects you can create a decent Templar our if the PF1E class.
I’m just looked at the following inquisitions that are selectable instead of a domain and they seemed appealing to provide crunch for the abilities.
Execommunication
Heresy
Sedition
https://www.d20pfsrd.com/classes/base-classes/inquisitor/inquisitions/inquistions-paizo/
Alternatively. There is the War-Priest class. Which is kind of a customizable Paladin of sorts. It allowing you to play evil or neutral divine warrior that gets a domain and weapon specific to a deity (SM). It could also be played as a viable Templar.