Hi Martin,
ILFORD MULTIGRADE RC COOLTONE springs to mind.
It’s a variable-grade, plastic-coated paper weighing 190 gsm, with a cool-white base and a neutral-cool image tone. It might not be widely stocked by most suppliers, but one supplier in the south has it in stock.
The PE from Kentmere (VC Select) is also fine, though not quite as cool; you might be able to tweak it a little in that direction with Moersch Finisher Blue Additive. I haven’t tried the Blue Additive yet, though.
Best regards and happy shooting!
Ralph
SILBERPHOTOGRAPHIE.DE