How can I group/count occurences of a column

I have a google sheet with 2 columns. E.g

Jim  | Foo  John | BarJane | X  Jim  | YZ  

etc

What I usually do is:

1. download the values as csv
2. write/run a script that processes the csv
3. the script goes over each row, groups by the first column and count occurences.
   Then I output the values order desc by number of occurrences.

How can I do this directly in google sheets?

Update:
I want to know if there is some formula inside google sheets that can do this instead of having a separate script to process the file

The expected output would be:

Jim | 2 John| 1 Jane| 1 

orJim | 2Jane| 1John| 1

The order for ties does not matter