| 100% | CIO | 3 | Union that merged with the AFL in 1955 |
| 84% | AFL | 3 | Union that merged with the CIO in 1955 |
| 81% | AFL | 3 | Union that merged with the CIO in 1955 (Abbr.) |
| 71% | CIO | 3 | It merged with the AFL in 1955 |
| 67% | AFL | 3 | Org. that merged with the CIO in 1955 |
| 57% | AFTRA | 5 | Union that merged with SAG in 2012 |
| 55% | SAG | 3 | Entertainment labor union that merged with AFTRA in 2012 |
| 55% | AFTRA | 5 | Entertainment union that merged with SAG in 2012 (Abbr.) |
| 55% | AFL | 3 | It merged with the CIO in 1955 |
| 54% | SAG | 3 | Hollywood performers' union that merged with AFTRA in 2012: Abbr. |
| 54% | ABA | 3 | Org. that merged with the 41-Across in the 1970s |
| 54% | WWE | 3 | Org. that merged with the U.F.C. in 2023 |
| 51% | TCI | 3 | Cable co. that merged with A.T. & T. in the nineties |
| 48% | SAG | 3 | Union that merged with AFTRA |
| 47% | CIO | 3 | It merged with the AFL |
| 47% | AFOFL | 5 | Org. that merged with the CIO |
| 46% | CALF | 4 | Muscle that merges with the Achilles tendon |
| 44% | AMOCO | 5 | Company that merged with BP in 1998 |
| 44% | ERICSSON | 8 | Company that merged with Sony in 2001 |
| 44% | DAIMLER | 7 | Company that merged with Benz in 1926 |
| 44% | KMART | 5 | Store that merged with Sears in 2005 |
| 44% | SEARS | 5 | Retailer that merged with Kmart in 2005 |
| 44% | EXXON | 5 | Company that merged with Mobil in 1999 |
| 44% | KRAFT | 5 | Company that merged with Heinz in 2015 |
| 44% | TELAVIV | 7 | City that merged with Jaffa in 1950 |
| 44% | MOBIL | 5 | Company that merged with Exxon in 1999 |
| 44% | DELTA | 5 | Airline that merged with Northwest in 2008 |
| 44% | SEAMLESS | 8 | Company that merged with Grubhub in 2013 |
| 44% | UAL | 3 | Co. that merged with Continental in 2010 |
| 44% | TMOBILE | 7 | Company that merged with Sprint in 2020 |