Special characters in app titles and subtitles

When browsing the Shopify App Store, I’m increasingly seeing special characters in app titles and subtitles, including:

Character Unicode
✦ U+2726
✧ U+2727
↑ U+2191
→ U+2192
• U+2022
» U+00BB
℠ U+2120

Patterns include stars within titles, symbols at the beginning or end of subtitles, and stars at both ends. Other characters serve as separators or brand marks.

I checked Shopify’s App Store listing requirements, but couldn’t find a clear answer. Are these characters allowed in app titles and subtitles?