I do not have the version of FrontPage shown in the screenshots, but one that was included with Visual Studio 6 which is a bit older - however it doesn't look really that different.

And TBH i cannot see that ease of use. To me FrontPage looks weird and "disconnected" - the editor even is a separate program - and the hierarchy it makes feels unintuitive.

I've used simpler programs.

FrontPage Express is basically the editor (though i think it is actually a separate program that uses the same name but i'm not 100% sure) so it doesn't handle a full site, but for very simple stuff it is fine (e.g. [0]) Adobe Page-Mill is another alternative from the time that has some form of site support. I actually use that sometimes for very simple pages - and it also happens to create very clean code (e.g. [1]).

IMO iWeb is by far the simplest and easiest website builder i've used. I haven't used anything that approaches it - other builders, even some that claim to be alternatives, do not have the full WYSIWYG element (ie. you're not editing articles inside the page itself but you use a separate editor). Its biggest issue was that it created pages that were a bit "heavy" (...though nowadays i've seen much heavier sites) and that the themes were almost hardcoded (there were 3rd party themes but the program never seemed to be designed to allow that). I didn't use it much myself, though i have an old page made with it [2] (note that the links do not work).

Two other programs that i found easy to use though both were too "raw", with very blatant missing features and bugs are WebsitePainter and RocketCake by the developer of the Irrlicht (and later CopperCube) 3D game engine. RocketCake is basically WebsitePainter but with a more restrained editor for making "responsive" sites. Both can be found at [3] and [4], though i only played around with them a bit. I wanted to buy WebsitePainter, but it was too buggy and the author seemed to be focused more or RocketCake, which i didn't like as much, so i never used any of these for anything i actually uploaded anywhere.

For a more "modern" take, one very easy tool i found is Publii [5]. This is a bit more restricted in that it is mainly for blog and blog-like stuff (it says it is a CMS but realistically, this feels like how people used blogs years ago instead of CMSs because blogs were popular). TBH i am not a big fan of its output or theming since i find both practically impossible to customize, but it is easy to use and does provide a WYSIWYG editor (for content, you still need to build the site to see how it'd look in a browser). I've used it for [6] but only because i haven't found anything simpler that still provides WYSIWYG editing and graphical site management.

As a sidenote, i see most technical people complaining about the code these tools produced, but for me that is completely missing the point - one would use such a tool so they do not have to mess with the code at all. The produced code doesn't matter (and never mattered to me when judging these programs), it is how the final result looks and behaves in a browser that matters.

[0] http://runtimeterror.com/tools/gopher/

[1] http://runtimeterror.com/tools/bugs/

[2] http://runtimeterror.com/games/nikwideluxe/old/

[3] https://www.ambiera.com/websitepainter/index.html

[4] https://www.ambiera.com/rocketcake/index.html

[5] https://getpublii.com/

[6] http://runtimeterror.com/devlog/