Golek is a variety that very popular in my home country, Indonesia. But it was considered a second tier mango over there. It is very sweet, juicy, with a little fiber, very thin seed, and no scent.
Arummanis (means sweet aroma)is the one that considered top tier. It was my favorite childhood fruit.
Arumanis mangoes have a vibrant green skin with large, light-yellow dots. The fruit maintains its green coloring even when ripe and is ready to eat. Arumanis mangoes have an overall elongated and elliptical shape, can weigh up to one pound. Bright yellow to orange color flesh has a strong, sweet aroma and flavor . The flesh is thick and juicy and mostly fiberless.
There is a guy in San Gabriel selling the grafted arummanis, but I cannot tell if it is legit.
The picture on his web looks legit, like the arummanis I know.