Even if they identify their origin, I don't know that they'll release it to the public. Via The Journal:

FOUR UNIDENTIFIED MILITARY-STYLE drones breached a no-fly zone and flew towards the flight path of Ukrainian president Volodymyr Zelenskyy’s plane at sea near Dublin Airport late on Monday night, The Journal has learned.

The plane landed, slightly ahead of schedule, just moments before the incident happened at about 11pm. The drones reached the location where Zelenskyy’s plane was expected to be at the exact moment it had been due to pass.

The drones then orbited above an Irish Navy vessel that had secretly been deployed in the Irish Sea for the Zelenskyy visit.

Sources have said that the drones took off from the north-east of Dublin, possibly near Howth, and flew for up to two hours. Enquiries are being carried out to determine whether the drones took off from land or from an undetected ship.

It is not yet known who launched and controlled the drones or where the drones are now.

Military-style drones are capable of a large range of functions. In this case, the fact that the drones had their lights on has led security forces to suspect that the aim was to disrupt the flight’s arrival into Dublin.

Garda Commissioner Justin Kelly was told about the incident in the early hours of Tuesday morning. It is understood that the Taoiseach and Ministers for Justice and Defence were also told in the hours after it happened. It is not known if Irish authorities briefed the Ukrainian president’s team.