Board games - medium weight

I have around 15 board games, most of them are low complexity and only exceptions are Twilight struggle, Clank catacombs and 7 wonders duel(low to medium)

Planning to move to medium complexity games which are fun and very high replay ability even after 20 plays and playtime less than 90 mins..

Can you please recommend suggest some good board games?

In future, I plan to have Spirit island, Terraforming mars, Brass Birmingham, Arkham horror card game, white castle or dune imperium.. but before I reach there, want to get my hand on other medium games..