Is there a form of AES encryption where the cipher text matches the length of the clear text and does not show patterns?
What you want is length-preserving encryption, which is a special case of Format-preserving encryption.

A standard mode for achieving this FFX mode, which uses a blockcipher, like AES, in a Feistel network. This mode is relatively complex and slow.

But I strongly recommend using normal authenticated encryption over format preserving encryption whenever possible. Format-preserving encryption always leaks if two plaintexts are identical, whereas semantically secure encryption avoids this leak. It also lacks integrity protection, unlike authenticated encryption.