Also my list of beginner corals are based on growing your coral list later and having places to put them.
Ricordea mushrooms florida not yumas.
Disc mushrooms, if on their own rock at least easy to remove them unlike kenya trees.
Photosynthetic gorgorians.
As long as they have enough flow these are almost unkillable.
I like Gareth's suggestions. you can find cheaper discosoma mushrooms that add great color while you dial in your parms and learn to keep everything stable.
Couple things to consider. Many of the soft corals can be a nuisance later on. So read up on what they are prior to diving in. For example I had to move my leathers away from my LPS due to chemical coral warfare. Even though I run carbon, they were killing all my new lps.
Here is a great video from Tidal Gardens. Than does a great job of explaining it all.
I don't know your budget, but I do think many people spend way too much on lighting initially. Consider buying lights that you can enhance as you go. Maybe buying T5s (softies do very well under them) now and then adding LEDs as you need and you move to more light demanding corals.
Suggest you read the sticky threads on https://www.reef2reef.com/forums/new-to-saltwater-reef-aquariums-post-here.130/ especially on QT. It will save you heartache and expense down the road. - https://humble.fish/quarantine/ - Humble fish is one of the foremost experts on QT.
The Beginner series is great:
https://www.reef2reef.com/threads/checklist-before-you-start-your-first-saltwater-aquarium.603703/
https://www.reef2reef.com/ams/decisions-decisions-decisions-part-1.679/
https://www.reef2reef.com/ams/decisions-decisions-decisions-part-2.680/
https://www.reef2reef.com/ams/decisions-decisions-decisions-part-3.686/