If you're looking for a matcha with a stronger, nuttier flavor, you might want to try a culinary grade matcha or a matcha blend that includes roasted brown rice (genmaicha matcha). These varieties tend to have a more robust flavor profile with nutty undertones.
Regarding the intense color and artificial taste you mentioned, it's possible that the matcha you had was of lower quality or not stored properly. Matcha can lose its freshness and develop off-flavors if exposed to excessive sunlight, heat, or air. It's best to store matcha in an airtight container in a cool, dark place to preserve its flavor and quality.
When choosing matcha, you can also look for brands that source their matcha from reputable producers and prioritize freshness. Reading reviews or seeking recommendations from other matcha enthusiasts can also help you find a matcha with the flavor profile you prefer.
Remember, taste preferences can vary, so it's worth exploring different brands and varieties to find the matcha that suits your personal taste.