Add remaining DNS plugins to mypy.ini and sort entries
diff --git a/mypy.ini b/mypy.ini
index 506c253a8b1..d00c21ae7ce 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -8,6 +8,15 @@ check_untyped_defs = True
 [mypy-certbot_apache.*]
 check_untyped_defs = True
 
+[mypy-certbot_dns_cloudflare.*]
+check_untyped_defs = True
+
+[mypy-certbot_dns_cloudxns.*]
+check_untyped_defs = True
+
+[mypy-certbot_dns_digitalocean.*]
+check_untyped_defs = True
+
 [mypy-certbot_dns_dnsimple.*]
 check_untyped_defs = True
 
@@ -29,8 +38,5 @@ check_untyped_defs = True
 [mypy-certbot_dns_route53.*]
 check_untyped_defs = True
 
-[mypy-certbot_dns_digitalocean.*]
-check_untyped_defs = True
-
 [mypy-certbot_nginx.*]
 check_untyped_defs = True
