| Oncidium Uzhupud Dream | 20 Jan 2026 | Oncidium Northern Visit × Oncidium George McMahon |
| Oncidium George's Dance | 05 Jun 2024 | Oncidium George McMahon × Oncidium Shell Dance |
| Oncidium Solar Glory | 14 Jan 2024 | Oncidium Hallio-Crispum × Oncidium George McMahon |
| Oncidium Liz Johnson | 03 May 2023 | Oncidium George McMahon × Oncidium Avranches |
| Oncidium Aurelio | 30 Nov 2020 | Oncidium Extraria × Oncidium George McMahon |
| Oncidium George Village | 21 Nov 2020 | Oncidium George McMahon × Oncidium Victoria Village |
| Oncidium George Leysa | 21 Nov 2020 | Oncidium Leysa × Oncidium George McMahon |
| Oncidium George Fair | 21 Nov 2020 | Oncidium Mayfair (1993) × Oncidium George McMahon |
| Oncidium Tiger George | 21 Nov 2020 | Oncidium Tiger Hambühren × Oncidium George McMahon |
| Oncostele Golden George | 21 Nov 2020 | Oncostele Golden Crisp × Oncidium George McMahon |
| Oncidopsis George Col | 21 Nov 2020 | Oncidopsis Colombia × Oncidium George McMahon |
| Oncidium George Pimlico | 21 Nov 2020 | Oncidium Pimlico × Oncidium George McMahon |
| Aliceara Gualaceo Spring | 05 May 2017 | Aliceara Samurai × Oncidium George McMahon |
| Brassidium Hwuluduen Oriole | 22 Dec 2016 | Brassidium Fu Lai Orange × Oncidium George McMahon |
| Oncostele Solari | 21 May 2014 | Oncostele Catatante × Oncidium George McMahon |
| Oncidium Lucy Roessiger | 27 Aug 2013 | Oncidium George McMahon × Oncidium Rolfeae |
| Oncidium Enzan Marcy | 12 Apr 2010 | Oncidium spectatissimum × Oncidium George McMahon |
| Oncidium Gold Buzz | 27 Jul 2009 | Oncidium George McMahon × Oncidium Pacific Lilatante |
| Oncidium Enzan Mac | 30 Dec 2008 | Oncidium anthocrene × Oncidium George McMahon |
| Oncidium Gay Fairchild | 15 Oct 2008 | Oncidium George McMahon × Oncidium Shelley |
| Oncidium Clever | 26 Aug 2008 | Oncidium Parade × Oncidium George McMahon |
| Aliceara Enzan Splendor | 17 Jul 2008 | Aliceara Tropic Splendor × Oncidium George McMahon |
| Oncostele Enzan Fortune | 14 Aug 2006 | Rhynchostele bictoniensis × Oncidium George McMahon |
| Oncidium Nichirei Marge | 12 Jul 2005 | Oncidium Marie Noel × Oncidium George McMahon |
| Oncidium Nichirei Starlight | 12 Jul 2005 | Oncidium Lovely Planet × Oncidium George McMahon |
| Oncidium Nichirei Georic | 12 Jul 2005 | Oncidium George McMahon × Oncidium Eric Young |
| Oncidium Enzan Honey | 20 Feb 2003 | Oncidium George McMahon × Oncidium harryanum |
| Oncidium Muriel Forlenza | 10 Jul 2001 | Oncidium George McMahon × Oncidium Crowborough (1965) |
| Oncidium Georger Gold | 22 Jun 2000 | Oncidium Golden Filigree × Oncidium George McMahon |
| Oncidium French Cream | 19 May 2000 | Oncidium George McMahon × Oncidium Vivaldi |