Best options for air sealing & insulating 1960s raised ranch without spray foam

A homeowner with a 1960s raised ranch is trying to fix drafts coming from behind the baseboards and around old single-pane windows, and wants to air seal the rim joist (the band of framing where the floor meets the foundation) and the attic without using spray foam. Insulation companies have been pitching spray foam, but the homeowner is looking for alternatives: sealing tapes, mastics (a paste-like sealant), and rigid foam board, along with mineral wool (also called rock wool or Roxul) in the garage ceiling and rim joist areas. One tricky detail: in this house the rim joist in the garage sits several inches in from the garage walls rather than flush with them, which may complicate sealing that area.

For the attic, the homeowner currently has an unknown depth of blown-in cellulose insulation, roughly 4 to 6 inches, and is deciding between adding more cellulose or switching to blown-in fiberglass, which is what most contractors have recommended so far. One estimate proposes adding attic baffles (channels that keep insulation from blocking roof ventilation), foam air sealing, and enough fiberglass to reach an insulation value of R-49, but doesn't break out costs for each part. The homeowner is weighing whether cellulose plus non-foam sealing around light fixtures and vent penetrations would work as well. Window replacement is planned as a separate, later project. Homeowners facing similar drafty, older raised ranches may run into the same choice between spray foam and alternatives like mineral wool, tape, and mastic when getting insulation quotes.