https://www.whatruns.com/website/honestsignalz.com
https://www.whatruns.com/website/janlifestyle.com
will tell you exactly what they use to create their websites. (eg., honestsignalz.com uses joomla whereas janlifestyle.com uses wordpress) alongwith what plugins, fonts, payment processors, etc they use.
WhatRuns Google Chrome Extension can get you theme, plugins, etc.
Hosting is a little trickier. I'd recommend starting with WhoIs Domain Tools.
Adding here. If you are interested about knowing what exactly runs on a website, you can use the [https://www.whatruns.com/](whatruns) browser extension. Super useful. I use it all the time, and sometimes just for fun.
This site wasn't build using WordPress
This is an extension i use alongside Wappalyzer to figure out how a certain website was build. Really useful.
There's a nifty little chrome extension called "What Runs" that can give you a real nice snapshot of whats going on behind the scenes.
Its can tell you tag managers, js frameworks, ad servers, fonts, etc. without uaving to dig through code.