Are there different types of erectile dysfunction? Or, rather, is there information to be gleaned about causes of a person’s ED from the way one has or doesn’t have an erection?

e.g., I can get an erection but it doesn’t last more than 15 minutes or so into sex. Almost all sensation in the penis is lost. The erection may come back occasionally during sex but not as full and strong as during the first 15 minutes. Ejaculation is a near impossibility.

Masturbating is almost the same story- erection is lost within 15 minutes but ejaculation is easier to obtain.

Could this case of ED be the adrenals not having enough reserve to maintain the necessary hormones to maintain the erection?

I am 41yo, treated for AF and hypothyroid.