It is hard to predict the exact blockchain that will attract the larger number of Metaverse projects. But, I think Dot, Fantom, and Sol along with BSC and TRC20 networks are the way to go. These blockchains have lower gas fees and faster transactions. TRC20 is good for NFT and Defi-oriented projects, (take the example of the upcoming FRX project.) or Apenft as an NFT art-oriented platform.
Polkadot and Fantom are powerful and have huge potential in the near future.
Eth has high gas fees right now and this is not a healthy sign for the long run.