I have some differential genes from an RNA-seq experiment and I wanted to look at changes of transposable element genes (transposons). This data is human and I have the ensembl gene names from GRCh37 and the GRCh37.75 GTF. I wanted to add the gene_biotype from the GTF to each gene and look for different types of genes, protein coding vs miRNA and transposable element etc. But now I have look at the biotypes, I see that transposable element are not in the list. I do not know what they fall under. Is there any way to annotate my ensembl genes that are transposable elements as such?

I thought that this would work because I did this for Arabidopsis using TAIR10 and the gene_type separated all of these features out but biotypes do not pair well with the annotations used by TAIR. Any help would be appreciated!