If you have never kept corals, I would start with some softies and once you’ve kept them alive and thriving for a few months, try some LPS, and once they’ve been thriving for several months, try some SPS ad/or anemones. I completely disagree with the people telling you not to get Xenia or GSP, they are both great corals and are completely manageable if you be place them strategically, when tanks get taken over by corals like these the corals either weren’t placed appropriately or they weren’t properly managed/maintained (or a combination of both). That said, here are some recommendations for easy/beginner friendly corals in each category.
Softies: mushrooms, zoanthids/palythoas, Xenia, GSP, Kenya trees, Sinularia/Nepthea, clove polyps, leathers, and then not technically a soft coral, but equally as hardy, rock flower and maxi mini anemones.
LPS: micromussa/acan lords, Duncans, blastomussa, lobophyllia, candy canes, cyphastrea, turbinaria (large polyp variety), some chalices, galaxea, and favia/Favites/goniastrea.
SPS: Montipora (capricornis, digitata, and some of the encrusting varieties), birdsnests (seriatopora), anacropora, hydnophora, pavona, Bali Slimer (Acropora yongei), and porites. And for anemones, start with a bubble tip, then try a long tentacled, sebae, carpet, etc.
I don’t think Toadstools are good beginner soft corals, they can be finicky and pouty, and while they are hardy, they can lead someone inexperienced to become discouraged and or tinker with things above their experience level thinking there is something wrong with their water. Euphyllia/Fimbriaphyllia (torches/hammers and frogspawns) also don’t make good beginner LPS, they can be sensitive drama queens (sort of similar to toadstools), and they just aren’t as hardy as some of the other LPS listed above. Both of these corals/types of corals are relatively/comparatively easy, but I wouldn’t call them beginner corals.