aggregate( layer:= 'Point_Clip', aggregate:='concatenate', expression:=to_string(RL), concatenator:=', ', filter:=intersects($geometry, geometry(@parent)) )

dbquery('Point_Clip','Name','start_point(@geometry) intersects $geometry')

if(regexp_substr(aggregate(
layer:= 'Point_Clip',
aggregate:='concatenate',
expression:= to_string(Name),
concatenator:=', ',
filter:=intersects($geometry,
geometry(@parent))),'(.*),')='',geomintersects('Point_Clip','Name'),regexp_substr(aggregate(
layer:= 'Point_Clip',
aggregate:='concatenate',
expression:= to_string(Name),
concatenator:=', ',
filter:=intersects($geometry,
geometry(@parent))),'(.*),'))