For Map Embeds, Can One Use Google My Maps Or Should One Stick To GMB Embeds?

In episode 164 of Semantic Mastery's weekly Hump Day Hangouts, one participant asked if it is okay to use Google My Maps or whether one should stick to GMB embeds in reference to Map Embeds.

The exact question was:

With reference to Map Embeds, can we use Google MyMaps or only GMB embeds? Thanks for all you've done this year and keep on rocking in 2018.