As a practical matter, the high school academic credentials that presumably fell short for frosh admission are likely to hold you back for sophomore level transfer, since you will not have much of a college record, unlike junior level transfer applicants for whom high school academic credentials are less important due to having more of a college record.
But you really should reconsider why you want to transfer. Michigan CS is regarded more highly than many of the other colleges on your proposed transfer application list. And you are getting it for a lower price as a Michigan resident (even though your upper class parents with $500k+ income could presumably afford a higher price, saving them some money is still a nice thing). What are the “various reasons” that Michigan does not fit you?