Need help with conditional fomatting formula based in text on cells

While others have posted basic formulas, it occurs to me that they may result in "false positives".  I immediately thought of the INC in LINCOLN (whether a given name such as Lincoln Chafee or a surname).  Other people who would be incorrectly highlighted:

• Prince R. Nelson (yes, "the" Prince)
• Linda Prince (film producer and director in independent cinema)
• anyone with a surname of Finch

I don't know if you are attempting to select all businesses (and even all organizations) in your data.  These would be highlighted:

• Incarnate Word Church (not their exact title, but you get the idea)
• Incredible Weddings
• Agriculture & Clean Energy Incubator (Texas)
• Inca Design (UK)

And other hypothetical businesses also (I made up these; no guarantee that they do not exist):

• Principal Realtors
• It's A Cinch (rope store)
• Cincinnati Grocery
• Provincial Apartments
• Carpet Cleaners of Distinction
• Invincible Law Office
• Ye Olde Incense Shoppe
• Fragrances, Charms & Incantations
• Springfield Incineration Facility
• The Income Builders (financial advisors)
• Inchworm Babysitters
• Incomparable Cleaners
• Incalculable Wealth Advisors
• "Inconceivable!" Assassins of Sicily (Wallace Shawn, Proprietor)

And "LLC" has a similar, but smaller problem:

• Hillcrest Manor (Texas)
• Hellcat Firefighters
• Ecclesiastical Skullcaps of New York

You can exclude many of those names (if desired) by adding a leading space before INC and LLC.  (A period after INC would be good, but I don't know how "clean" your data is.)

If to slightly modify previous ones

=SUM( COUNTIFS(C1, "* " & $G$2:$G$5 & "*" ) )

=REGEXTEST($C1,"(?<=\s)(CORPORATION|LLC|INC|ENTERPRISES)")

Try the following formula in custom conditional formula rule.

=OR(REGEXTEST(TEXTSPLIT($C1," "),"CORPORATION|LLC|INC|ENTERPRISES"))

This is the rule for conditional formatting in my sample file.

=SUM(N(ISNUMBER(SEARCH($G$2:$G$5,C2))))

This is the "applies to" range in the sample.

=$C$2:$C$8