| Nationwide Bond Index Fund | Class A | GBIAX | — |
| Nationwide Bond Index Fund | Class R6 | GBXIX | — |
| Nationwide Bond Index Fund | Class R | — | — |
| Nationwide Bond Index Fund | Institutional Service Class | NWXOX | — |
| Nationwide International Index Fund | Class A | GIIAX | — |
| Nationwide International Index Fund | Class R6 | GIXIX | — |
| Nationwide International Index Fund | Class R | GIIRX | — |
| Nationwide International Index Fund | Institutional Service Class | NWXPX | — |
| Nationwide Mid Cap Market Index Fund | Class A | GMXAX | — |
| Nationwide Mid Cap Market Index Fund | Class R6 | GMXIX | — |
| Nationwide Mid Cap Market Index Fund | Class R | GMXRX | — |
| Nationwide Mid Cap Market Index Fund | Institutional Service Class | NWXQX | — |
| Nationwide S&P 500 Index Fund | Class A | GRMAX | — |
| Nationwide S&P 500 Index Fund | Class R6 | GRMIX | — |
| Nationwide S&P 500 Index Fund | Service Class | GRMSX | — |
| Nationwide S&P 500 Index Fund | Institutional Service Class | GRISX | — |
| Nationwide S&P 500 Index Fund | Class R | GRMRX | — |
| Nationwide Small Cap Index Fund | Class A | GMRAX | — |
| Nationwide Small Cap Index Fund | Class R6 | GMRIX | — |
| Nationwide Small Cap Index Fund | Class R | GMSRX | — |
| Nationwide Small Cap Index Fund | Institutional Service Class | NWXRX | — |
| Nationwide BNY Mellon Dynamic U.S. Core Fund | Class A | NMFAX | — |
| Nationwide BNY Mellon Dynamic U.S. Core Fund | Class R | GGFRX | — |
| Nationwide BNY Mellon Dynamic U.S. Core Fund | Class R6 | MUIGX | — |
| Nationwide BNY Mellon Dynamic U.S. Core Fund | Institutional Service Class | NGISX | — |