The second bachelor's degree is a form of academic education recognized by the Ministry of Education, and its level is between ordinary undergraduate and master's degree. According to the "Trial Measures for Training Students with Second Bachelor's Degree in Colleges and Universities" ((87) Jing Jiao ZiNo. 105, 1987), graduates with second bachelor's degree enjoy the treatment of postgraduate classes in terms of wages and salaries. Since there is no graduate class now, I refer to the treatment of graduate students. However, it needs to be emphasized that although you have two bachelor's degrees and enjoy the master's treatment, you are not a master's degree after all, and you can't enjoy all the master's treatment, only part of the treatment such as salary. Full-time teaching mode is adopted, that is, the professional courses in the professional training plan are taught for two years. Because you have already taken public courses when you read your first undergraduate diploma. But now many people are studying for their second bachelor's degree on the job, and various educational institutions are also lax about it. Among the kinds you mentioned, the second bachelor's degree has the highest gold content. However, due to the expansion of graduate students, the second bachelor's degree is no longer popular.

Double degree, minor and second major are almost the same, and the state has not clearly defined these categories, as long as the school-running unit starts classes. This kind of students use their leisure time to expand their professional knowledge while studying for their first undergraduate diploma. The diploma obtained was issued by the school itself and was not recognized by the Ministry of Education.

I know nothing about your second degree.