This show pretty clearly did a huge change, doubling down on personal stories and social commentary in S3.
They started with Moclans and gender identity in
Season 1, Episode 3 "About a Girl".
Also...
Episode 2, "Command Performance" - Mercer/Grayson relationship, personal story.
Episode 7, "Majority Rule" - social commentary.
Episode 8, "Into the Fold" - starting the Isaac/Claire relationship, personal story.
Episode 9, "Cupid's Dagger" - Mercer/Grayson relationship, personal story.
Then Season 2
Episode 1, "Ja'loja" - relationship stuff all over the place.
Episode 2, "Primal Urges" - Moclan relationship story
Episode 3, "Home" - Alara leaves, personal story
Episode 6, "A Happy Refrain" - Isaac/Claire relationship story.
Episode 7, "Deflectors" - Moclan intolerance social commentary story
Episode 10, "Blood of Patriots" - Gordon personal story and extremism commentary
Episode 11, "Lasting Impression" - Gordon falls in love with a hologram, personal story
Episode 12, "Sanctuary" - Moclan female colony, social commentary
Looks like relationships and social commentary were at the forefront a whole lot.