CREATE TABLE customers (customer_name VARCHAR, payment_method VARCHAR)

What are the names of customers using the most popular payment method?
SELECT customer_name FROM customers WHERE payment_method = (SELECT payment_method FROM customers GROUP BY payment_method ORDER BY COUNT(*) DESC LIMIT 1)
SELECT "customer_name" FROM "customers" WHERE "payment_method" = (SELECT "payment_method" FROM "customers" GROUP BY "payment_method" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1)