Henceforth, heretofore and notwithstanding thenceforward wherewithal

I love * these kind of words:

Moreover, therefore, heretofore, hereto, however, notwithstanding,
furthermore, henceforth, wherefore, nonetheless, nevertheless,
although, withal, howbeit, albeit, thenceforward, suchlike, so on and so
forth…

Many are conjunctions but then there examples like:

Wherewithal, withstand, hereafter…

They are mostly composed of smaller words joined with each other, but personally, I don’t think 'breakfast' or 'cupboard', for instance, have the same quality.

What, if any, is the term for this kind of word?

_{* used sparingly, they’re really useful to communicate complex ideas efficiently, but overuse makes you sound a bit like a twat magisterial, or potentially betray a lack self-esteem (or at least awareness) …}

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P.S. please feel free to edit and help with tags on this one.