The best replacement for correlated subquery is non correlated subquery.

The best alternatives to correlated subquery are rated as following:
★★★★★  non correlated subquery
★★★★  nested subquery
★★★★  subquery
★★★  cross apply
★★  inline view
★  derived tables
★  self join
  correlated subquery
  nested query

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correlated subquery
non correlated subquery
nested subquery