I am sure the Doughboys would help you. In their various namings they claim to be the only Anglo-Latvian ZydeCajun Ceilidh Band in the land world
Indeed when they come to Gloucester for Cajun a la Fontaine we insist on a couple of Latvian dances.
One I remember was reminiscent of Chapelloise a bit more skippy. I don't remember it as a progressive but maybe that was because the room was narrow.
Men on inside, ladies outer, grand circle
sort of skipping forward , followed by the same.
turn a repeat back (facing direction of travel both times)
turn again and balance together, balance apart.
repeat ballance together, balance apart.
repeat all till tired.

The other one was just a polka but a skippy/bouncey one, and man's left arm at his waste, hand covering woman's right in same place. A bit elbow sticky-outy.

Of course the music would inform the feet, as in any good dance (or band).

Daina Auzins on FB and her sister gave a workshop at IVFDF 2017. Maybe she could help.