Here are just some simple notes about these 2 equivalent models

MME for GBLUP

You can understand GBLUP is a “improved” version of traditional PBLUP

where $\sigma^2_a$ is the total genetic variance, $\lambda=\sigma^2_e/\sigma^2_a$
$\mathbf{u}\;\sim\;N(\mathbf{0},\mathbf{G}\sigma^2_a)$

Model for SNP-BLUP

The marker effects $\mathbf{g}_i$ were assumed to be identically and independently distributed

where
$\mathbf{g}\;\sim\;N(\mathbf{0},\mathbf{I}\sigma^2_g)$
$\mathbf{e}\;\sim\;N(\mathbf{0},\mathbf{D}\sigma^2_e)$

where
$d_{ii} = 1/\omega_i$
$\omega_i = EDC_i/\lambda$

MME

where
$\sigma^2_g$ is the SNP variance for each SNP
$\lambda=\sigma^2_e/\sigma^2_g$
$\sigma^2_a=2\sum_{i=1}^mp_iq_i\sigma^2_g$

The DGV