Scala polymorphic type filtering

FilterTypes.scala

object FilterTypes extends App {
  import scala.reflect.ClassTag
  import scala.reflect.runtime.universe._
  
  object RichClass {
    def unapply[T](a: RichClass[T]): Option[T] = Option(a.value)
  }
  implicit class RichClass[T](val value: T)(implicit val classTag: ClassTag[T], val typeTag: TypeTag[T]) {}

  def getOfType[T : ClassTag : TypeTag](list: Seq[RichClass[_]]): Seq[T] = {
    list.collect {
      case richClass @ RichClass(elem: T) if richClass.typeTag.tpe =:= typeOf[T] => elem
    }
  }

  val anyLists : Seq[RichClass[_]] = Seq(
    List("A", "B"), List("C"),
    List(1), List(2,3),
    List(true, false)
  )
  val stringLists : Seq[List[String]] = getOfType[List[String]](anyLists)
  println(stringLists.mkString(" "))
}