I understand that, my two favourite New Zealand explorers (Charlie Douglas and George Dobson), are both very obscure but very admirable IMO - and they're obscure because they were the furthest from glory hounds that you can get. If you can get a hold of this book[0], it's a very interesting read (well, for me, anyway, being a Kiwi and all, especially the chapter where the editor collated Charlie Douglas' diary writings on our native birds, and what they were like for eating, which features some of our now rarest birds, he was quite fond of the flavour of kākāpō[1][2], which is critically endangered now). This article might be easier to access than an out of print book.[3]
But, so many explorers that were contemporaries of Shackleton, like Amundsen, Nansen, Byrd, Scott, etc. _were_ glory hounds. Does that negate their exploration? I mean, it often meant that they took stupid risks to be "first", fully agree there. But if we eliminate the glory-hound polar explorers, there's precious few left.
[0]: https://www.canterbury.ac.nz/engage/cup/catalogue/books/mr-e...
[1]: https://en.wikipedia.org/wiki/Kākāpō
[2]: https://www.youtube.com/watch?v=9T1vfsHYiKY
[3]: https://www.nzgeo.com/stories/travels-with-mr-explorer-dougl...