Easy Vegan Chocolate Peanut Butter Cheesecake

1-½ cups vegan chocolate cookie crumbs
¼ cup vegan butter, melted
2 (8-ounce) packages vegan cream cheese, softened
¾ cup sugar, divided
½ cup soy milk, at room temperature, divided
½ cup creamy peanut butter, at room temperature
½ teaspoon salt
⅓ cup semisweet vegan chocolate chips, melted