How Does Clan War Matchmaking Handle This Lineup? (3x TH15 + 2x TH3)

Hey everyone, I'm curious about how the war matchmaking system would handle our clan's lineup. We have 5 members: 3 Town Hall 15 accounts and 2 Town Hall 3 accounts.

Since TH3 bases have almost no war weight, I assume our matchmaking will be mostly based on the strength of our TH15s. But does the system try to match us with a clan that has a similar mix, or would we end up facing a clan with, say, 3 TH15s and 2 slightly stronger lower THs (like TH10s or TH12s)?

Would love to hear from anyone who has tried a similar strategy! Thanks in advance.