I do like the Capitan cavalry.
Finally, a look at the BAL. I’m currently painting the Westminister Grenadiers (above) and (below) the Munster Light Infantry. I like these figures and they mix well enough with the (single pose and command) Capitan BAL.
You could also use these BAL figures for a couple of the Cape Wars.
I can think of a few fellows who, rather splendidly, do the First Carlist War in 28mm. In 15/18mm only two and that includes me. No doubt there are other devotees of Carlist War 15mm out there. If you're one of them do drop by and say hello.