That is cool. DOA as well. I didn't go to concerts until the early 90s. You're older than I thought (compliment). Never saw a goth band... I think. Some of the goth stuff I like could probably still classify as punk (Christian Death).
Goth wasn't the name of the subculture originally. As I recall we used the term Death punk until the mid 80's when gothic started to be in vogue. Goth music's roots are in the punk and post punk scene so that would include punk, new wave, industrial and hardcore. The term gothic rock or deathrock is rarely used by the artists to describe themselves either. And gothic music means something different in the UK than it does in the US, so when Siouxsie Sioux of the Banshee's fame says she was never a gothic band it is in reference to the UK meaning vs the US meaning.
In the late 1970s, the word "gothic" was used to describe the atmosphere of post-punk bands like Joy Division, Siouxsie and the Banshees and Magazine. In March 1979, critic Nick Kent used the gothic adjective in his review of Magazine's second album Secondhand Daylight. Kent noted that there was "a new austere sense of authority" to their music, with a "dank neo-Gothic sound".[19] Later that year, Martin Hannett described Joy Division as "dancing music with gothic overtones"[20] and in September, their manager Tony Wilson described their music as "gothic" on the television show Something Else.[21] In 1980, Melody Maker wrote that "Joy Division are masters of this gothic gloom".[22] When their final album Closer came out a couple of months after the death of their singer, Sounds noted in its review that there were "dark strokes of gothic rock".[23] Not long after, this appellation "became a critical term of abuse" for a band like Bauhaus, who had arrived on the music scene in 1979.[20]
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Source: https://en.wikipedia...iki/Gothic_rock
Goth later became a positive identifier, obviously.
The roots of the music are punk and post punk with deathpunk or deathrock in the US has been used to describe the music as well. It was never a defined subgenre of music at least not one used by the artists themselves while they were making the music but became a catch all term used to describe music that death punks/goths listen to.
These early post-punk deathrock bands were not immediately identified as part of a new subgenre of punk; they were simply considered a darker flavor of punk and were not yet considered part of a separate musical movement. During this time, these bands would play at the same venues as punk, hardcore and new wave bands.
source: https://en.wikipedia.../wiki/Deathrock
So if you are not sure exactly what goth music is, it is because it never was and really isn't now a genre in and of itself but rather a catch all term used to generally describe a 'darker version' of music in already existing genres of music.