That is a great question! I've included a bunch of brands that have shades similar to Mane Attractions's Creamsicle below: (Some of these are not EXACT matches, but very close)
Raquel Welch's RL16/88: Pale Golden Honey or RL14/22: Pale Gold Wheat (Both shades have a decent amount of platinum blonde in them)
Gabor's GL14/22 Sandy Blonde:
Tony of Beverly's Coconut Cream:
Noriko, Rene of Paris, and Amore's Strawberry Swirl:
BelleTress's Vanilla Lush:
Henry Margu's 27/26H :
Please do keep in mind, not all of these shades are available in every style by that brand.