The database has a split by service type for (there can be High-speed values or not):
2020: CP, DB, RZD, SBB, SNCF, VR (all CO2e)
2019: CP, DB, RZD, SBB, SNCB (CO2), SNCF, VR (CO2e when not stated otherwise)
2018: CP, DB, RENFE (CO2), RZD, SNCB (CO2), SNCF, VR (CO2e when not stated otherwise)
Would you allow to share the most up-to-date ESRS level 1 value (https://www.co2-data.org/):