*Here is/are X* is fine, but it doesn't mean quite the same thing as *Your shoes are here*—it's used primarily when you hand *X* to the hearer: > Here are your shoes; I found them under the table. > Here's your book; thanks for lending it to me! And we wouldn't ordinarily say *Here these are* (unless we had to distinguish *these* from some other *X*, "those *X*"); we use the 'personal' pronoun *they*, just as in *Here it is*: > Here they are; I found them under the table.