I didn't like Pillars 2 very much. The main story was interesting but I didn't get to see it much.
I think the killer for me was I couldn't get into any of the factions. All of the factions have good and bad morality, to the point where I don't have any interest in backing any of them AND I have no particular interest in fighting them, either. I played that game for a long time, trying to find a story I could get into, before just giving up.
I never played Tyranny - there always seems to be other things to play, though it definitely sounds interesting.
It's not like those are the only isometrics out there, though. Here's some others to consider:
Roll for initiative, take attacks of opportunity, manage player location and the verticality of the battle field in this Turn-Based Tactical RPG based on the SRD 5.1 Ruleset. In Solasta, you make the choices, dice decide your destiny.
Getting released tomorrow
A tactical sci-fi RPG set in an alternative 1970's, where an enormous and inexplicable artifact –the Dome– is discovered in a remote desert. Fight enemies, explore the anomalous wasteland, level up your character, join one of the forces in the ruined world.
Step into the wacky heroic fantasy universe of the Dungeon of Naheulbeuk. Lead a team of unlikely and clumsy heroes in an epic and challenging tactical RPG. Live an adventure filled with humor, surprises and silly encounters.
And, if you haven't played it yet
The critically acclaimed RPG that raised the bar, from the creators of Baldur's Gate 3. Gather your party. Master deep, tactical combat. Venture as a party of up to four - but know that only one of you will have the chance to become a God.