Here's a deep dive into your options for at home espresso machines. While this is definitely not a comprehensive list, it should be enough to get you started. Plus a couple articles about bars of pressure and "stovetop espresso." Cheers!
How Pressure Affects Espresso Quality article
Moka Pot vs Espresso Machine article
A few Automatic/Pod options ($)
Nespresso
Lavazza
A few Manual options ($-$$)
Article with "Top 3"
Robot (CafeLat)
A few Electronic options ($$-$$$$$)
Breville ($$-$$$)
Nuova Simonelli ($$$)
Decent Espresso ($$$$)
La Marzocco Linea Mini ($$$$$)
