So, I'm among the many who have come back for Summerset, my main since back in the day has been a Magplar DPS and now I'm leveling a DK DPS toon. But to mix things up, I thought about doing something I haven't really done a lot of in MMOs before, and that's healing.

Now, in the olden days(tm), I always thought that "healer" automatically meant Templar, but from what I gather, there are healer builds for all classes now (I use alcasthq as my main source for builds), a lot of them look interesting, but what I haven't found yet was a general comparative guide to tell me the differences between the different classes for healing (I'm sorry if there is something like that and I missed it)

Considering that leveling a toon in ESO has (at least for me) some significant time investment due to limited playing time (especially since a lot of guides like to use skills that also need a lot of investment into guild quests and the like), I'd like to avoid trying my hand at 2-3 different healing classes to find out the pros and cons of each on my own, so my question is simple:

Which, in your opinion, is the class/build with the highest "skill floor" for someone learning the ropes as a healer? Not looking for the one with the highest ceiling, I doubt I'll have the time to get good enough to get even close to peak performance, so I'm rather looking for the one that's the hardest to screw up when healing for random groups and the like. As always, thanks in advance for your answers and advice!