What would you call the top 20 of the genre? And what do you mean by "the genre" in this case? If the genre is CRPGs
It is.
Baldur's Gate 2
Planescape: Torment
Jagged Alliance 2
Fallout 2
Ultima VII
Darklands
Battle Brothers
Temple of Elemental Evil
Pathfinder Kingmaker
Fallout 1
Divinity: Original Sin 2
Divinity: Original Sin 1
Disco Elysium
Pillars of Eternity 2: Deadfire
Underrail
Wastelands 3
Shadowrun Dragonfall
Shadowrun Hong Kong
Stygian
Arcanum
Tides of Numenera
Tyranny
Pillars of Eternity 1
Knights of the Chalice
Fallout Tactics
etc.
and that's on top of my head. I'm sure if I think about it calmly I'd be adding more.
If we are going to be less strict about definitions and include even other types of RPGs for which I have a very soft spot (immersive sims, management/tactical games, action RPGs with enough depth, etc) the list is going to expand considerably with stuff like:
System Shock 1 and 2,
Ultima Underworld 1 and 2,
Prey 2017,
Vampire Bloodlines,
Deus Ex,
Gothic 1 and 2,
Risen,
ELEX,
MAAAYBE even Risen 2 and 3 stretching it a bit (rough start but I ended up enjoying them a lot),
Witcher 1-to-3,
UFO Enemy Unknown (the original),
the modern XCOM 2 War of the Chosen,
Final Fantasy Tactics and Tactics Ogre,
Battle of Wesnoth...
These are all games that all things considered I enjoyed way more than Dragon Age (and without a doubt more than its sequels).