に限(かぎ)らずNot just, Not only… but also

Both mean not only…but also, but differ in register and nuance. に限らず stresses inclusiveness, as in 日本に限らず世界中で使われている (Used not only in Japan but worldwide). のみならず is more formal and often adds additional, sometimes surprising, information, as in 彼は日本語のみならず英語も話せる (He speaks not only Japanese but also English).

だけでなく and に限らず both express non-exclusivity, but differ in nuance and formality. だけでなく is a straightforward expression meaning 'not only (A), but also (B)', and is often used in everyday conversation (especially in the variant form だけじゃなくて). In contrast, に限らず has a more formal and academic tone, and carries a slightly different nuance, suggesting that whatever follows is 'not limited to' the thing in question.

Both に限らず and はもとより express inclusion beyond an initial example but differ in nuance. に限らず highlights that the mentioned case is not the only one, implying a broader range or scope (not only…but also). はもとより, on the other hand, emphasizes that the stated example is obvious or expected, and contrasts it with less obvious or more significant cases, carrying a nuance closer to 'needless to say…even more so'.

はもちろん emphasizes something obvious before adding another case, e.g. 日本人はもちろん留学生も来た ('Not only Japanese people but also exchange students came'). に限らず expands the scope of a statement, implying 'not limited to (A), also (B)', e.g. 子供に限らず大人も楽しめる ('Not only children, but also adults can enjoy it').

Both are fairly formal patterns which convey that something applies to more than one item, but they differ in nuance. ばかりでなく is a relatively straightforward 'Not only (A), but also (B)', e.g. 日本語ばかりでなく、韓国語も話せる 'He can speak not only Japanese, but also Korean.' In contrast, に限らず has a more specific nuance of 'Not limited to (A)', e.g. 学生に限らず誰でも入場できます 'Not limited to students, anyone can enter.'

をはじめ highlights one example among similar ones, e.g. 日本をはじめ多くの国で使われている ('It's used in many countries, starting with Japan'). に限らず expands the scope beyond the first item, e.g. 学生に限らず誰でも参加できる ('Not limited to students, anyone can participate').