According to "Welt", companies active in construction, rail infrastructure, digitalization and the energy industry are considered to be beneficiaries of the debt pact. So-called green sectors are also likely to benefit.
A few examples:
$FAST (-6,84%) - Fastned
$ACC (-5,34%) - Aker Corp
$IOS (-0,65%) - Ionos
$KTN (-8,56%) - Kontron
$NDX1 (-7,2%) - Nordex
$BC8 (-4,33%) - Bechtle
$VOS (-9,05%) - Vossloh
$S92 (-5,01%) - SMA Solar

Despite all the debt euphoria, however, investors should bear in mind that the infrastructure companies are smaller stocks that are not without risk.
Source (excerpt) & chart: World