What army would you recommend coming from AoS?

When I first got into the hobby, I chose Adeptus Mechanicus because I mainly liked how they looked, but foolishly never researched into how the army played. After building my army and playing with friends I didn't feel satisfied with how the army played (as well as growing increasingly frustrated with GW's decisions). Then we stopped for a while and switched focus to Warcry and Age of Sigmar, which there I play Gloomspite Gitz and Nighthaunt, both of which I really enjoy!

So, to the question at hand: Which faction/army would you recommend that are similar in gameplay as my preferences in AoS?

If there any clarifications needed I'll provide them the best I can. Thank you for lending your eyes to reading this, and I thank you double if you spend time with a reply!