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EURO-CORDEX has focused on the RCP scenarios. RCP2.6, RCP4.5 and RCP8.5, where the numbers relate to the forcing in W/m² at the end of the 21^st century relative to that of pre-industrial conditions.
For a detailed picture of which forcing scenarios for which GCM-RCM data exist in the CDS, see CDS documentation and catalogue entries.
Documentations:
CMIP5: https://confluence.ecmwf.int/display/CKB/CMIP%3A+Global+climate+projections
CMIP6: https://confluence.ecmwf.int/display/CKB/CMIP6%3A+Global+climate+projections
CORDEX: https://confluence.ecmwf.int/display/CKB/CORDEX%3A+Regional+climate+projections
CDS catalogue entries:
CMIP5:
https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cmip5-monthly-single-levels
https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cmip5-monthly-pressure-levels
https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cmip5-daily-single-levels
https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cmip5-daily-pressure-levels
CMIP6: https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cmip6
CORDEX: https://cds.climate.copernicus.eu/cdsapp#!/dataset/projections-cordex-domains-single-levels
For future application when EURO-CORDEX may have generated CMIP6-based scenarios it is noted that the new SSP-RCP scenarios differ from the RCPs even if the nominal forcing levels at the end of the century (indicated by the numbers, e.g. 8.5 (W/m^-2) in SSP5-8.5 vs RCP8.5) are the same. This results from the fact that the specific pathways to 2100 differ in terms of how the different greenhouse gases evolve over time. For more information on differences between RCPs and SSP-RCPs see for instance Tebaldi et al. (2021).

References

Boé J, Somot S, Corre L and Nabat P (2020) Large discrepancies in summer climate change over Europe as projected by global and regional climate models: causes and consequences. Clim Dyn 54, 2981–3002. https://doi.org/10.1007/s00382-020-05153-1

Bärring L and Strandberg G (2018) Does the projected pathway to global warming targets matter? Environmental Research Letters, 13 (2018), 10.1088/1748-9326/aa9f72

Kjellström E, Nikulin G, Strandberg G, Christensen OB, Jacob D, Keuler K, Lenderink G, van Meijgaard E, Schär C, Somot S, Sørland SL, Teichmann C, and Vautard R (2018) European climate change at global mean temperature increases of 1.5 and 2 °C above pre-industrial conditions as simulated by the EURO-CORDEX regional climate models, Earth Syst. Dynam., 9, 459-478, DOI: 10.5194/esd-9-459-2018.

Tebaldi C, Debeire K, Eyring V, Fischer E, Fyfe J, Friedlingstein P, Knutti R, Lowe J, O'Neill B, Sanderson B, van Vuuren D, Riahi K, Meinshausen M, Nicholls Z, Tokarska KB, Hurtt G, Kriegler E, Lamarque J-F, Meehl G, Moss R, Bauer SE, Boucher O, Brovkin V, Byun Y-H, Dix M, Gualdi S, Guo H, John JG, Kharin S, Kim Y, Koshiro T, Ma L, Olivié D, Panickal S, Qiao F, Rong X, Rosenbloom N, Schupfner M, Séférian R, Sellar A, Semmler T, Shi X, Song Z, Steger C, Stouffer R, Swart N, Tachiiri K, Tang Q, Tatebe H, Voldoire A, Volodin E, Wyser K, Xin X, Yang S, Yu Y and Ziehn T, (2021) Climate model projections from the Scenario Model Intercomparison Project (ScenarioMIP) of CMIP6, Earth Syst. Dynam., 12, 253–293, https://doi.org/10.5194/esd-12-253-2021^{Image Added}.