I’ve been tasked with doing a rebuild of my daughter’s school’s website. https://www.tamarackwaldorf.org
Unfortunately, I have to use WordPress and what I’ve learned is that WP is a pain in the but to design a backend for non technical users that is anywhere close to the quality of a Total CMS site.
Even the best themes and plugins have bugs and limitations that I know are going to throw some of the teachers for a curve and result in support request. 
Divi is probably your best bet - you can teach someone to use it In a couple of hours
Or use Pinegrow WP.
BTW That Divi visual interface is very impressive.
If you’re having to work with WordPress then it’s Divi (https://www.elegantthemes.com/gallery/divi/) if you want someone else to be able to edit after you’ve done the hard work, or Pro (https://theme.co/pro/) if you’re doing it all yourself, I think. At least in my experience.
No affiliation with either - but they both do a good job, IMHO
Gavin
Pinegrow has improved a lot, but it’s not anywhere near being user-friendly yet, I don’t think.
Agreed and Pinegrow v3 is an improvement but it demands a high level of web craft and dedication to master the UI. No Bootstrap 4 support yet either.
Divi is what web building should look like in 2017. Most RW users would be in shock and denial that such a visual web building tool could exist. They have done a great job with their 100 days of UI rethink.
I’ve been playing with Pro for the past week or so - it’s a beautiful piece of work, too.
I’m sort of agnostic, I think - RW works well for my website because I’m the only one doing it, but it’s impossible to hand over a website in RW to a punter, despite the best efforts of the CMS producers. WordPress, on the other hand, with something like Divi, makes it super easy to train someone how to edit pages, but also how to add pages, get them on the menu, etc. Divi and Pro allow for templated pages and elements.
And if you know what you’re doing with WordPress, it’s no less secure than any other platform. I love playing with RW, but by the time you’ve bought Stacks, some stacks and more, you’d be better off with a Wordpress Installation and a lifetime licence for Pro (currently about $69 per site).
I’ll hide behind the cupboard now, whilst everyone throws stuff at me 