A (whole) host of (something) noun phrase
Used to refer to a very large number of people or things
He has a whole host of excuses for his lateness to work every day.
There is a whole host of stay-at-home activities that people can do to kill quarantine boredom during the Covid-19 pandemic.
A whole host of people flocked to the mall on Black Friday.
This phrase is used to describe something very modern or updated or something that no longer looks like what it's used to.
It has been a long time since I left my high school, and now I have to admit that it's certainly not your father's high school anymore.