Both of those links are to "review" sites.
HostingAdvice is just you average scam/sham site, suggesting that you use EIG brands (BlueHost, Hostgator, etc). Understand their advice is for themselves to profit off you. Or rather, to profit off your misery, as EIG is a truly miserable experience.
That other sites is a mix, both with good and bad advice.
- Cloudways and Hostgator (EIG) have no business being in their lists.
- And while
A2 Hosting and
Siteground are quite excellent providers, neither are optimized for Magento.
Magento is a beast of an application, with a new install comprising 10k+ files and wanting lots of resources. Add a few users, and the site gets stressed very easily on a shared server. Admin/users of this store needs to pay close attention to caching, PHP, MySQL and RAM.
Nexcess is what you want for Magento hosting.
The other option is your own 2gb+ managed VPS. That's best for having multiple Magento stores. For example,
LiquidWeb,
Knownhost, or
IOzoom.