6 classes are annotated with CommerceTaxType in Commerce Core 8.2

CanadianSalesTax in modules/tax/src/Plugin/Commerce/TaxType/CanadianSalesTax.php

Provides the Canadian sales tax type.

Custom in modules/tax/src/Plugin/Commerce/TaxType/Custom.php

Provides the Custom tax type.

EuropeanUnionVat in modules/tax/src/Plugin/Commerce/TaxType/EuropeanUnionVat.php

Provides the European Union VAT tax type.

NorwegianVat in modules/tax/src/Plugin/Commerce/TaxType/NorwegianVat.php

Provides the Norwegian VAT tax type.

SwissVat in modules/tax/src/Plugin/Commerce/TaxType/SwissVat.php

Provides the Swiss VAT tax type.

UnitedKingdomVat in modules/tax/src/Plugin/Commerce/TaxType/UnitedKingdomVat.php

Provides the United Kingdom VAT tax type.