Italy is far stronger after their top 2 though?
Belgium have WVA and Remco, then that's really it. Campenaerts is washed up, Lampaert is only competitive in TT's in terrible fields in Belgium and NC's. Sobrero, Affini, Cattaneo, Bettiol and Moscon (when he tries) have been consistently competitive in high level WT TT's in the last 2 years. Can kinda see that lack of results from Belgian riders in TT'ers from the TT ranking from PCS (not perfect ofc), apart from WVA and Remco, Belgium has 1 rider in the top 100. Italy has 4 in the top 20 and 7 in the top 100.
I guess it would depend on how far you are willing to go. If you want to select 20 TT'ers, that could be a problem. If you want to select 5, that's a completely different matter.
Van Aert, Evenepoel, Lampaert, Van Wilder, Campenaerts are still very much relevant even if Campenaerts has let go of the discipline for the most part. After that you still have some decent TT'ers like Herregodts, Frison, De Gendt and Vermeersch. With some young guys coming soon, like Uijtdebroeks, Segaert...
PS: also no need to brush off Lampaert as some hack who can only perform in weak fields, while at the same time you are proposing Affini, Cattaneo, Bettiol, Moscon and Sobrero, who have combined the same amount of WT ITT wins as Lampaert: 1. And it should be said, that the ITT Lampaert won was vs Asgreen, Dennis and Kung. While Sobrero won his WT ITT vs Arensman and Van der Poel.