It's currently a standard Geth node due to storage limitations (a 1 TB disk for both Geth and Lighthouse). I'll bump the storage up next year to 2 TB (or more), so I can run an erigon archive node and thus won't need to prune geth regularly either.
[1] https://ethresear.ch/t/proposer-block-builder-separation-fri...
e: a letter + source