The small ones are CTS13 series wet slug tantalum’s, usually ultra reliable, at least till the case corrodes through, or you reverse bias it, and it turns into a pretty good popgun. The rubber sealed ones are in general pure crap as they age, and replacing with the same value, or the next value up, as they have odd values like 82uF, 150uF, 330uF and such, and next voltage up in a low ESR good quality electrolytic is worth it, though you will probably only find the replacement units as radial capacitor, and will need to sleeve the one lead to fit the board.
Wet slug is available up to around 10000uF 100V though the price is in the stratosphere for them, and you special order them from Vishay. But they do come with a really good guarantee, and a per unit certification.