Not sure if this is what you meant but https://pool.satoshiradio.nl/ is an initiative by Dutch podcasthost nostr:nprofile1qqs0tlt4fptsgmehatjcexpd0gyerwsgext0tveep73t44r77fccmmgpz3mhxue69uhhyetvv9ujuerpd46hxtnfduq3qamnwvaz7tmwdaehgu3wwa5kuegpp4mhxue69uhkummn9ekx7mqrkhp92 where more then 300 BitAxes will mine in a solomining collective pool. No collective payout though, block winner takes all. Also see his recent notes for background.