Multiple LASSO benchmarks

There are currently two locations with LASSO outputs: `benchmark_lasso` and `lasso`, each displaying separately on the website.
And in the `lasso` one file is now following the naming convention thus not displayed online.
Maybe we should find a way to harmonize the naming with published results.

Start by comparing the `benchmark_lasso` and `lasso` locations and inspect how their filenames are discovered for website display. Determine a single naming convention for the published LASSO results and verify that all relevant files appear together online.

Written by the indexing model from the issue text.