The 2022 Topps Baseball factory set is the easiest way to build a complete base set. Packaged together is a nice box, it has all 660 cards from the flagship Series 1 and Series 2 sets. Depending on the version that you get, there might be some exclusives as well.
They’re actually 663-card sets. Special variations of Julio Rodriguez, Bobby Witt Jr. and Spencer Torkelson were late additions to all sets. These cards are different from the Short Print Variations found in 2022 Topps Series 2. The approach is similar to Vladimir Guerrero Jr. in 2019, and Ronald Acuna Jr. and Gleyber Torres in 2018. Go back even further to 2012 and there’s Bryce Harper.