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A multi-chip lighting emitting device (LED) lamp for pro viding white light includes a Submount including first and second die mounting regions thereon. A first LED chip is mounted on the first die mounting region, and a second LED chip is mounted on the second die mounting region. The LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. For example, a first conversion material may at least partially cover the first LED chip, and may be configured to absorb at least some of the light of the first colorand re-emit light of a third color. In addition, a second conversion material may at least partially cover the first and/or second LED chips, and may be configured to absorb at least Some of the light of the first and/or second colors and re-emit light of a fourth color. Related light fixtures and methods are also disclosed.