Return All Words Between Unit And Number Right Before $ Sign

I'm trying to return only the following portion of the text from a large list.

So, I want to have just the following phrase appear in a column:

Original
AAM UNIT AAM HIGH 50 DIVIDEND 13 $77,666,423 $1,132,491

To
AAM HIGH 50 DIVIDEND

Original
AAM UNIT AAM HIGH 50 DIVIDEND 13 $77,666,423 $1,132,491

To
AAM HIGH 50 DIVIDEND

Original
FIRST TRUST UNIT FT HIGH DIV EQUITY 15 $13,140,862 $301,295

To
FT HIGH DIV EQUITY

So, I essentially, want any words that appear between "Unit" and the first number that appears before the $ sign (in this case 13 and 15 respectively, but the numbers can be anything - "Unit" stays the same down the list).