Well I don't usually create AUs for any characters but I will tell you about the yoshis in my AU 👇:
#1: Green Yoshi, Pink Yoshi, and Light Blue Yoshi are best friends.
#2: Blue Yoshi and Light Blue Yoshi are siblings.
#3: Red Yoshi, Orange Yoshi, and Pink Yoshi are siblings too (Red is the older brother, Orange is the middle brother, and Pink is the younger brother).
#4: Yellow Yoshi and Blue Yoshi are best friends, but also Blue Yoshi can be the best friend of Red Yoshi.
#5: Black Yoshi and White Yoshi are best friends.
#6: Purple Yoshi can be friends of Orange and Brown Yoshis.
#7: All of them can swallow enemies to make them eggs XD.
Well thats all bye!!!